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Finding the Fourth Proportional to 132,618.38, 198,933.03 and 39,124.13

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Solution

The fourth proportional to 132,618.38, 198,933.03 and 39,124.13 is: 58,687.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,618.38 : 198,933.03 = 39,124.13 : x
  2. Step 2: Convert to fraction form
    132,618.38/198,933.03 = 39,124.13/x
  3. Step 3: Cross multiply
    132,618.38x = 198,933.03 × 39,124.13
  4. Step 4: Simplify right side
    132,618.38x = 7,783,080,732.35
  5. Step 5: Solve for x
    x = 7,783,080,732.35/132,618.38
  6. Step 6: Final answer
    x = 58,687.80

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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.