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Finding the Fourth Proportional to 124,294.56, 171,530.64 and 67,711.20

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Solution

The fourth proportional to 124,294.56, 171,530.64 and 67,711.20 is: 93,443.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,294.56 : 171,530.64 = 67,711.20 : x
  2. Step 2: Convert to fraction form
    124,294.56/171,530.64 = 67,711.20/x
  3. Step 3: Cross multiply
    124,294.56x = 171,530.64 × 67,711.20
  4. Step 4: Simplify right side
    124,294.56x = 11,614,545,471.17
  5. Step 5: Solve for x
    x = 11,614,545,471.17/124,294.56
  6. Step 6: Final answer
    x = 93,443.72

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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.