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Finding the Fourth Proportional to 127,874.91, 176,468.13 and 74,191.89

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Solution

The fourth proportional to 127,874.91, 176,468.13 and 74,191.89 is: 102,385.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,874.91 : 176,468.13 = 74,191.89 : x
  2. Step 2: Convert to fraction form
    127,874.91/176,468.13 = 74,191.89/x
  3. Step 3: Cross multiply
    127,874.91x = 176,468.13 × 74,191.89
  4. Step 4: Simplify right side
    127,874.91x = 13,092,502,836.17
  5. Step 5: Solve for x
    x = 13,092,502,836.17/127,874.91
  6. Step 6: Final answer
    x = 102,385.24

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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.