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Finding the Fourth Proportional to 18,793.60, 25,882.56 and 18,385.44

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Solution

The fourth proportional to 18,793.60, 25,882.56 and 18,385.44 is: 25,320.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,793.60 : 25,882.56 = 18,385.44 : x
  2. Step 2: Convert to fraction form
    18,793.60/25,882.56 = 18,385.44/x
  3. Step 3: Cross multiply
    18,793.60x = 25,882.56 × 18,385.44
  4. Step 4: Simplify right side
    18,793.60x = 475,862,253.93
  5. Step 5: Solve for x
    x = 475,862,253.93/18,793.60
  6. Step 6: Final answer
    x = 25,320.44

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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.