Rule of Three Cross-multiplication
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Rule of Three Cross-multiplication
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(simple proportional) rule of three
The value of A is related to B, like C to D
value of A
value of B
value of A
value of D
Inverse Rule of Three
The less of A, the more B
value of A
value of B
value of C
value of D
composite Rule of three
old quantity
old amount
old duration
new quantity
new amount
new duration
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