The phrase "and decided to dedicate" is correct and usable in written English.
You can use it when expressing a choice or resolution to commit oneself to a particular task, cause, or purpose.
Example: "After much consideration, she reflected on her life choices and decided to dedicate her time to volunteering."
Alternatives: "and chose to commit" or "and resolved to devote".
She recalls being fascinated by the animals when she visited the center as an undergraduate and decided to dedicate her career to studying and conserving lemurs.
He admitted that his first few years of television work were merely self-promotional, and said that is why he opened Fifteen, and decided to dedicate it to training troubled youth.
This scene made an enormous impression on me: I presumed that tying a cherry stalk into a knot was something all teenage girls had to master – up there with algebra, and how to fill in the paying-in slip on a Nationwide building society savings account – and decided to dedicate myself to learning this vital craft.
The dream hunt -- all expenses paid, including taxidermy -- was the brainchild of Kevin Hoyt, a 35-year-old hunting instructor who quit a job as a structural steel draftsman a few years ago and decided to dedicate himself to getting children across the country interested in hunting.
After spending several years dealing with severe digestive issues, while pursuing a career in marketing and advertising, Amie's health continued to deteriorate so she quit her job and decided to dedicate her time to healing herself.
"I love iPhone applications more than anyone!", you thought to yourself, "I should make them!" So you picked up a book on Objective C and Cocoa, spent about 20 minutes with it, and then decided to dedicate your life to something that didn't make your brain cramp.
Pacun died of a stoke last July, and Abikarram decided to dedicate this season to his memory.
Richie and the original producer, Quincy Jones, had planned a twenty-fifth anniversary recording anyway, and wisely decided to dedicate it to earthquake relief.
Powell describes himself as a practitioner, and has decided to dedicate the rest of his life to the work of stopping armed conflict.
He graduated Dickinson College in Carlisle, PA in 1948 and having decided to dedicate his life to the service of God, worked with migrant farm workers from northern Florida through northern New York before enrolling in Union Theological Seminary in New York City where he was awarded a Masters of Divinity in 1952.
Hans von Bülow, born in 1830, had abandoned his legal education after hearing Liszt conduct the premiere of Wagner's Lohengrin at Weimar in August 1850, and had decided to dedicate his life to music.
