The phrase "aided by a large" is correct and usable in written English.
It can be used when describing assistance or support that is provided by a significant quantity or size of something.
Example: "The project was successfully completed, aided by a large team of dedicated volunteers."
Alternatives: "supported by a substantial" or "assisted by a considerable".
Surveillance cameras were not working, and investigators said the thieves appeared to have been aided by a large tent covering the museum's back entrance for an event.
Julian Yates at Investec said: Headline 2013 earnings are 3% ahead of our forecast, with solid progress in core COBAL licences and also Main Frame solutions, albeit aided by a large first half deal.
Citizens on this side elect their own government, collect taxes, run their own police force, administrative services and education system, and can enter into development projects or business deals with foreigners, aided by a large exile Kashmir population.
Finally he said that the flow of foreign fighters has been aided by a large human smuggling network, with one foot in Syria and the other in western Europe.
The president is also ahead in Nevada, aided by a large Latino population that continues to heavily favor him over Romney.
Our study was aided by a large sample size and the use of 3 different energy-intake methods.
The Israelis say Hezbollah's fighters number from 2,000 to 4,000, a small army that is aided by a larger circle of part-timers who provide logistics and storage of weapons in houses and civilian buildings.
I agree that we don't need more secret judges, but a wider variety, chosen more transparently and aided by a larger staff to track the huge electronic hoard of personal data that can be misused.
Tirta Marta's success was to a large degree aided by a set of official guidelines aimed at reducing the use of plastic bags.
Investigators at Société Générale believe that rogue trader Jérôme Kerviel was aided by an assistant who processed a large number of his transactions during the fraudulent trading spree that cost the bank €4.9bn (£3.9bn).
The government says it will raise 12.3bn euros this year, aided by an increase in tax for large companies.
