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Finding the Fourth Proportional to 21,379.68, 32,065.92 and 5,793.12

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Solution

The fourth proportional to 21,379.68, 32,065.92 and 5,793.12 is: 8,688.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,379.68 : 32,065.92 = 5,793.12 : x
  2. Step 2: Convert to fraction form
    21,379.68/32,065.92 = 5,793.12/x
  3. Step 3: Cross multiply
    21,379.68x = 32,065.92 × 5,793.12
  4. Step 4: Simplify right side
    21,379.68x = 185,761,722.47
  5. Step 5: Solve for x
    x = 185,761,722.47/21,379.68
  6. Step 6: Final answer
    x = 8,688.70

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.