The phrase "are progressively more" is correct and usable in written English.
It can be used to describe a situation or condition that is increasing or intensifying over time.
Example: "The challenges we face in the project are progressively more complex as we move forward."
Alternatives: "are increasingly" or "are becoming more".
The chains are progressively more pervasive in older primates.
That prompted Mark M. Zandi, the chief economist at Economy.com, to develop three forecasts of the aftermath, which are progressively more negative depending on the national situation.
"Progressively smaller fibres are progressively more supple," Fossey says, "so you get a fibre that is very strong but more comfortable".
However, the increasing complexity of embedded systems is contributing to testbenches that are progressively more difficult to understand, maintain, extend and reuse across projects.
In particular, the great industrial laboratories such as Bell Labs, IBM Research and Xerox Parc have passed or greatly faded and the national laboratories are progressively more focused on applications.
As the prevalence and costs associated with mental illness rise, we are progressively more aware that environmental issues such as climate change and biodiversity loss impact on human health.
The changes in cell cycle progression were progressively more pronounced when cells were exposed to medium containing lower glucose-and l-glutamine quantities.
Stepping back even further in geological time, the low points are predicted to have been progressively more extreme.
European Product Policies aim at boosting the EU market to be progressively more sustainable by setting product's specific thresholds.
Evans, Frank, and Arbus were progressively more explicit photographer laureates of the abyssal lack — the wanting, the want — that defines American soulfulness.
