Can you run a 6" fan with 4" duct?

The reason I'm asking is my 4" infinity fan stays running. My tent is in my house. My house Temps stay 73, inside mt tent it stays 83-84. Just wondering if I hook up the 6" fan if it will pull more air from my bottom flaps to cool it off a couple more degrees to stay closer to 80. I have 414 watts of LED lights. I even mounted mounted driver from the TS1000 outside the tent. Is 84 degrees to hot?
 
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