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Finding the Fourth Proportional to 113,489.28, 156,593.28 and 63,188.16

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Solution

The fourth proportional to 113,489.28, 156,593.28 and 63,188.16 is: 87,187.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,489.28 : 156,593.28 = 63,188.16 : x
  2. Step 2: Convert to fraction form
    113,489.28/156,593.28 = 63,188.16/x
  3. Step 3: Cross multiply
    113,489.28x = 156,593.28 × 63,188.16
  4. Step 4: Simplify right side
    113,489.28x = 9,894,841,231.56
  5. Step 5: Solve for x
    x = 9,894,841,231.56/113,489.28
  6. Step 6: Final answer
    x = 87,187.45

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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.