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Finding the Fourth Proportional to 14,885.67, 20,542.17 and 8,079.69

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Solution

The fourth proportional to 14,885.67, 20,542.17 and 8,079.69 is: 11,149.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,885.67 : 20,542.17 = 8,079.69 : x
  2. Step 2: Convert to fraction form
    14,885.67/20,542.17 = 8,079.69/x
  3. Step 3: Cross multiply
    14,885.67x = 20,542.17 × 8,079.69
  4. Step 4: Simplify right side
    14,885.67x = 165,974,365.53
  5. Step 5: Solve for x
    x = 165,974,365.53/14,885.67
  6. Step 6: Final answer
    x = 11,149.94

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Half scale
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Double scale
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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.