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Finding the Fourth Proportional to 125,061.52, 172,585.20 and 68,471.68

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Solution

The fourth proportional to 125,061.52, 172,585.20 and 68,471.68 is: 94,491.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,061.52 : 172,585.20 = 68,471.68 : x
  2. Step 2: Convert to fraction form
    125,061.52/172,585.20 = 68,471.68/x
  3. Step 3: Cross multiply
    125,061.52x = 172,585.20 × 68,471.68
  4. Step 4: Simplify right side
    125,061.52x = 11,817,198,587.14
  5. Step 5: Solve for x
    x = 11,817,198,587.14/125,061.52
  6. Step 6: Final answer
    x = 94,491.08

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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.