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Finding the Fourth Proportional to 8,616.70, 11,892.17 and 5,258.82

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Solution

The fourth proportional to 8,616.70, 11,892.17 and 5,258.82 is: 7,257.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,616.70 : 11,892.17 = 5,258.82 : x
  2. Step 2: Convert to fraction form
    8,616.70/11,892.17 = 5,258.82/x
  3. Step 3: Cross multiply
    8,616.70x = 11,892.17 × 5,258.82
  4. Step 4: Simplify right side
    8,616.70x = 62,538,781.44
  5. Step 5: Solve for x
    x = 62,538,781.44/8,616.70
  6. Step 6: Final answer
    x = 7,257.86

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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.