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Finding the Fourth Proportional to 188,503.68, 260,136.92 and 102,462.61

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Solution

The fourth proportional to 188,503.68, 260,136.92 and 102,462.61 is: 141,399.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,503.68 : 260,136.92 = 102,462.61 : x
  2. Step 2: Convert to fraction form
    188,503.68/260,136.92 = 102,462.61/x
  3. Step 3: Cross multiply
    188,503.68x = 260,136.92 × 102,462.61
  4. Step 4: Simplify right side
    188,503.68x = 26,654,307,780.56
  5. Step 5: Solve for x
    x = 26,654,307,780.56/188,503.68
  6. Step 6: Final answer
    x = 141,399.40

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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.