Answer:
66/100 = 0.66
Explanation:
You can solve for the question mark value as though it were any other variable, or you can recognize the relationship between the numbers in the proportion.
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solve for ?
33/50 = ?/100
100(33/50) = ? = 66 . . . . . multiply both sides by 100
Then we know ...
33/50 = 66/100 = 0.66
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recognize the relationship
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Additional comment
Both 66/100 and 0.66 are pronounced "sixty-six hundredths".