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Write a proportion to determine the missing measureA lighthouse casts a 72-yard shadow at the same time as a 32-foot tall billboard casts a 19-foot shadowWhat is the height of the lighthouse?
Wiki User
∙ 14y ago
They both have the same tangent ratio so let the height of the lighthouse be x and change all units into feet:
x/216 = 32/19
Multiply both sides by 216:
x = 6912/19
x = 363.7894737 feet
Wiki User
∙ 14y ago
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