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Finding the Fourth Proportional to 13,662.14, 20,489.15 and 5,869.13

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Solution

The fourth proportional to 13,662.14, 20,489.15 and 5,869.13 is: 8,801.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,662.14 : 20,489.15 = 5,869.13 : x
  2. Step 2: Convert to fraction form
    13,662.14/20,489.15 = 5,869.13/x
  3. Step 3: Cross multiply
    13,662.14x = 20,489.15 × 5,869.13
  4. Step 4: Simplify right side
    13,662.14x = 120,253,397.17
  5. Step 5: Solve for x
    x = 120,253,397.17/13,662.14
  6. Step 6: Final answer
    x = 8,801.95

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1.5x scale

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.