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Finding the Third Proportional to 2,917 and 6,379

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Solution

The third proportional to 2,917 and 6,379 is: 13,949.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,917 : 6,379 = 6,379 : x
  2. Step 2: Convert to fraction form
    2,917/6,379 = 6,379/x
  3. Step 3: Cross multiply
    2,917x = 6,379 × 6,379
  4. Step 4: Simplify right side
    2,917x = 40,691,641
  5. Step 5: Solve for x
    x = 40,691,641/2,917
  6. Step 6: Final answer
    x = 13,949.83

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.