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Finding the Third Proportional to 3,926 and 5,469

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Solution

The third proportional to 3,926 and 5,469 is: 7,618.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,926 : 5,469 = 5,469 : x
  2. Step 2: Convert to fraction form
    3,926/5,469 = 5,469/x
  3. Step 3: Cross multiply
    3,926x = 5,469 × 5,469
  4. Step 4: Simplify right side
    3,926x = 29,909,961
  5. Step 5: Solve for x
    x = 29,909,961/3,926
  6. Step 6: Final answer
    x = 7,618.43

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.