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974 perches is about three-tenths as big as a Hot Air Balloon.
In other words, it's 0.310 times the size of a Hot Air Balloon, and the size of a Hot Air Balloon is 3.20 times that amount.
(four-person capacity; envelope volume; average)
The average volume of a hot air balloon sufficient to lift four adults is 3,100 perches. Typically made of nylon or dacron, a balloon envelope of this size typically weighs just 88 kg (190 lbs).
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