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Start with evaluating the greater distance between the second and the third dancer.
1.2 in.
Let's make a simplified diagram that describes the given situation.
Substitute values
LHS-1=RHS-1
LHS-1/3=RHS-1/3
a/b=a * 3/b * 3
a/b=a * 4/b * 4
Subtract fractions
Now, let's add this information to our diagram. In this exercise we are asked to find the lower distance between the first two dancers, and this distance corresponds to the length of AB. We can call this length x.
Let's recall the Proportional Parts of Parallel Lines Theorem.
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Proportional Parts of Parallel Lines Theorem |
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If three or more parallel lines intersect two transversals, then they cut off the transversals proportionally. |
Substitute values
Cross multiply
a * 1=a
a*b/c= a* b/c
LHS * 12=RHS* 12
.LHS /5.=.RHS /5.
Calculate quotient