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Finding the Fourth Proportional to 18,306.86, 25,263.87 and 11,229.10

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Solution

The fourth proportional to 18,306.86, 25,263.87 and 11,229.10 is: 15,496.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,306.86 : 25,263.87 = 11,229.10 : x
  2. Step 2: Convert to fraction form
    18,306.86/25,263.87 = 11,229.10/x
  3. Step 3: Cross multiply
    18,306.86x = 25,263.87 × 11,229.10
  4. Step 4: Simplify right side
    18,306.86x = 283,690,522.62
  5. Step 5: Solve for x
    x = 283,690,522.62/18,306.86
  6. Step 6: Final answer
    x = 15,496.41

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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.