If an object is 6.6 feet tall, and casts a shadow that is 19.8 feet long, this can be represented as
6.6 = 19.8
Then we factor in the object which is 14.7 tall = to an unknown value
So:6.6 / 14.7 = 19.8 / x
6.6 * 3 = 19.8
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14.7 * 3 = x
That makes x = to 44.1