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Finding the Fourth Proportional to 23,432.40, 32,398.92 and 20,479.95

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Solution

The fourth proportional to 23,432.40, 32,398.92 and 20,479.95 is: 28,316.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,432.40 : 32,398.92 = 20,479.95 : x
  2. Step 2: Convert to fraction form
    23,432.40/32,398.92 = 20,479.95/x
  3. Step 3: Cross multiply
    23,432.40x = 32,398.92 × 20,479.95
  4. Step 4: Simplify right side
    23,432.40x = 663,528,261.65
  5. Step 5: Solve for x
    x = 663,528,261.65/23,432.40
  6. Step 6: Final answer
    x = 28,316.70

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.