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Finding the Third Proportional to 918 and 1,659

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Solution

The third proportional to 918 and 1,659 is: 2,998.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    918 : 1,659 = 1,659 : x
  2. Step 2: Convert to fraction form
    918/1,659 = 1,659/x
  3. Step 3: Cross multiply
    918x = 1,659 × 1,659
  4. Step 4: Simplify right side
    918x = 2,752,281
  5. Step 5: Solve for x
    x = 2,752,281/918
  6. Step 6: Final answer
    x = 2,998.13

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Why These Related Problems?

These problems maintain the same ratio (1.81) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.