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Finding the Fourth Proportional to 120,058.59, 165,672.50 and 66,342.63

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Solution

The fourth proportional to 120,058.59, 165,672.50 and 66,342.63 is: 91,548.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,058.59 : 165,672.50 = 66,342.63 : x
  2. Step 2: Convert to fraction form
    120,058.59/165,672.50 = 66,342.63/x
  3. Step 3: Cross multiply
    120,058.59x = 165,672.50 × 66,342.63
  4. Step 4: Simplify right side
    120,058.59x = 10,991,149,036.96
  5. Step 5: Solve for x
    x = 10,991,149,036.96/120,058.59
  6. Step 6: Final answer
    x = 91,548.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.