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Finding the Third Proportional to 3,917 and 5,569

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Solution

The third proportional to 3,917 and 5,569 is: 7,917.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,917 : 5,569 = 5,569 : x
  2. Step 2: Convert to fraction form
    3,917/5,569 = 5,569/x
  3. Step 3: Cross multiply
    3,917x = 5,569 × 5,569
  4. Step 4: Simplify right side
    3,917x = 31,013,761
  5. Step 5: Solve for x
    x = 31,013,761/3,917
  6. Step 6: Final answer
    x = 7,917.73

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Why These Related Problems?

These problems maintain the same ratio (1.42) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.