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Finding the Third Proportional to 1,374 and 3,387

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Solution

The third proportional to 1,374 and 3,387 is: 8,349.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,374 : 3,387 = 3,387 : x
  2. Step 2: Convert to fraction form
    1,374/3,387 = 3,387/x
  3. Step 3: Cross multiply
    1,374x = 3,387 × 3,387
  4. Step 4: Simplify right side
    1,374x = 11,471,769
  5. Step 5: Solve for x
    x = 11,471,769/1,374
  6. Step 6: Final answer
    x = 8,349.18

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Why These Related Problems?

These problems maintain the same ratio (2.47) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.