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Finding the Third Proportional to 624 and 1,374

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Solution

The third proportional to 624 and 1,374 is: 3,025.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    624 : 1,374 = 1,374 : x
  2. Step 2: Convert to fraction form
    624/1,374 = 1,374/x
  3. Step 3: Cross multiply
    624x = 1,374 × 1,374
  4. Step 4: Simplify right side
    624x = 1,887,876
  5. Step 5: Solve for x
    x = 1,887,876/624
  6. Step 6: Final answer
    x = 3,025.44

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Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.