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Finding the Third Proportional to 3,862 and 5,782

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Solution

The third proportional to 3,862 and 5,782 is: 8,656.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,862 : 5,782 = 5,782 : x
  2. Step 2: Convert to fraction form
    3,862/5,782 = 5,782/x
  3. Step 3: Cross multiply
    3,862x = 5,782 × 5,782
  4. Step 4: Simplify right side
    3,862x = 33,431,524
  5. Step 5: Solve for x
    x = 33,431,524/3,862
  6. Step 6: Final answer
    x = 8,656.53

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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.