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Finding the Fourth Proportional to 18,658.52, 25,747.17 and 11,000.60

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Solution

The fourth proportional to 18,658.52, 25,747.17 and 11,000.60 is: 15,179.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,658.52 : 25,747.17 = 11,000.60 : x
  2. Step 2: Convert to fraction form
    18,658.52/25,747.17 = 11,000.60/x
  3. Step 3: Cross multiply
    18,658.52x = 25,747.17 × 11,000.60
  4. Step 4: Simplify right side
    18,658.52x = 283,234,318.30
  5. Step 5: Solve for x
    x = 283,234,318.30/18,658.52
  6. Step 6: Final answer
    x = 15,179.89

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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.