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Finding the Fourth Proportional to 88,657.68, 132,920.80 and 53,589.12

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Solution

The fourth proportional to 88,657.68, 132,920.80 and 53,589.12 is: 80,343.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,657.68 : 132,920.80 = 53,589.12 : x
  2. Step 2: Convert to fraction form
    88,657.68/132,920.80 = 53,589.12/x
  3. Step 3: Cross multiply
    88,657.68x = 132,920.80 × 53,589.12
  4. Step 4: Simplify right side
    88,657.68x = 7,123,108,701.70
  5. Step 5: Solve for x
    x = 7,123,108,701.70/88,657.68
  6. Step 6: Final answer
    x = 80,343.96

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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.