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Finding the Fourth Proportional to 118,753.68, 178,085.91 and 38,772.96

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Solution

The fourth proportional to 118,753.68, 178,085.91 and 38,772.96 is: 58,144.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,753.68 : 178,085.91 = 38,772.96 : x
  2. Step 2: Convert to fraction form
    118,753.68/178,085.91 = 38,772.96/x
  3. Step 3: Cross multiply
    118,753.68x = 178,085.91 × 38,772.96
  4. Step 4: Simplify right side
    118,753.68x = 6,904,917,864.99
  5. Step 5: Solve for x
    x = 6,904,917,864.99/118,753.68
  6. Step 6: Final answer
    x = 58,144.87

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.