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Finding the Fourth Proportional to 13,593.62, 18,761.76 and 8,869.70

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Solution

The fourth proportional to 13,593.62, 18,761.76 and 8,869.70 is: 12,241.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,593.62 : 18,761.76 = 8,869.70 : x
  2. Step 2: Convert to fraction form
    13,593.62/18,761.76 = 8,869.70/x
  3. Step 3: Cross multiply
    13,593.62x = 18,761.76 × 8,869.70
  4. Step 4: Simplify right side
    13,593.62x = 166,411,229.58
  5. Step 5: Solve for x
    x = 166,411,229.58/13,593.62
  6. Step 6: Final answer
    x = 12,241.86

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1.5x scale

Why These Related Problems?

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