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Finding the Fourth Proportional to 11,398.92, 17,098.38 and 5,161.92

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Solution

The fourth proportional to 11,398.92, 17,098.38 and 5,161.92 is: 7,742.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,398.92 : 17,098.38 = 5,161.92 : x
  2. Step 2: Convert to fraction form
    11,398.92/17,098.38 = 5,161.92/x
  3. Step 3: Cross multiply
    11,398.92x = 17,098.38 × 5,161.92
  4. Step 4: Simplify right side
    11,398.92x = 88,260,469.69
  5. Step 5: Solve for x
    x = 88,260,469.69/11,398.92
  6. Step 6: Final answer
    x = 7,742.88

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.