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Finding the Fourth Proportional to 69,005.71, 95,225.20 and 38,792.31

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Solution

The fourth proportional to 69,005.71, 95,225.20 and 38,792.31 is: 53,531.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,005.71 : 95,225.20 = 38,792.31 : x
  2. Step 2: Convert to fraction form
    69,005.71/95,225.20 = 38,792.31/x
  3. Step 3: Cross multiply
    69,005.71x = 95,225.20 × 38,792.31
  4. Step 4: Simplify right side
    69,005.71x = 3,694,005,478.21
  5. Step 5: Solve for x
    x = 3,694,005,478.21/69,005.71
  6. Step 6: Final answer
    x = 53,531.88

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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.