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Finding the Fourth Proportional to 62,909.60, 86,815.10 and 34,615.29

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Solution

The fourth proportional to 62,909.60, 86,815.10 and 34,615.29 is: 47,769.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,909.60 : 86,815.10 = 34,615.29 : x
  2. Step 2: Convert to fraction form
    62,909.60/86,815.10 = 34,615.29/x
  3. Step 3: Cross multiply
    62,909.60x = 86,815.10 × 34,615.29
  4. Step 4: Simplify right side
    62,909.60x = 3,005,129,862.88
  5. Step 5: Solve for x
    x = 3,005,129,862.88/62,909.60
  6. Step 6: Final answer
    x = 47,769.02

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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.