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Finding the Third Proportional to 918 and 1,374

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Solution

The third proportional to 918 and 1,374 is: 2,056.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    918 : 1,374 = 1,374 : x
  2. Step 2: Convert to fraction form
    918/1,374 = 1,374/x
  3. Step 3: Cross multiply
    918x = 1,374 × 1,374
  4. Step 4: Simplify right side
    918x = 1,887,876
  5. Step 5: Solve for x
    x = 1,887,876/918
  6. Step 6: Final answer
    x = 2,056.51

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.