The solution to fill in the blank is 1,720 kilograms.
Explanation:
There are 1,000 grams in a kilogram, so 5,000 grams is equal to 5 kilograms. If we subtract 5 from 1,725 (1,725 - 5), we get 1,720 kilograms as the difference. Therefore, the 2009 record pumpkin weighs 1,720 more kilograms than the average-sized pumpkin.
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