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Finding the Third Proportional to 2,791 and 4,327

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Solution

The third proportional to 2,791 and 4,327 is: 6,708.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,791 : 4,327 = 4,327 : x
  2. Step 2: Convert to fraction form
    2,791/4,327 = 4,327/x
  3. Step 3: Cross multiply
    2,791x = 4,327 × 4,327
  4. Step 4: Simplify right side
    2,791x = 18,722,929
  5. Step 5: Solve for x
    x = 18,722,929/2,791
  6. Step 6: Final answer
    x = 6,708.32

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.