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Finding the Third Proportional to 3,874 and 6,218

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Solution

The third proportional to 3,874 and 6,218 is: 9,980.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,874 : 6,218 = 6,218 : x
  2. Step 2: Convert to fraction form
    3,874/6,218 = 6,218/x
  3. Step 3: Cross multiply
    3,874x = 6,218 × 6,218
  4. Step 4: Simplify right side
    3,874x = 38,663,524
  5. Step 5: Solve for x
    x = 38,663,524/3,874
  6. Step 6: Final answer
    x = 9,980.26

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Why These Related Problems?

These problems maintain the same ratio (1.61) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.