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Finding the Fourth Proportional to 103,706.81, 155,691.51 and 63,627.31

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Solution

The fourth proportional to 103,706.81, 155,691.51 and 63,627.31 is: 95,521.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,706.81 : 155,691.51 = 63,627.31 : x
  2. Step 2: Convert to fraction form
    103,706.81/155,691.51 = 63,627.31/x
  3. Step 3: Cross multiply
    103,706.81x = 155,691.51 × 63,627.31
  4. Step 4: Simplify right side
    103,706.81x = 9,906,231,581.91
  5. Step 5: Solve for x
    x = 9,906,231,581.91/103,706.81
  6. Step 6: Final answer
    x = 95,521.51

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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.