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Finding the Third Proportional to 918 and 1,632

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Solution

The third proportional to 918 and 1,632 is: 2,901.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    918 : 1,632 = 1,632 : x
  2. Step 2: Convert to fraction form
    918/1,632 = 1,632/x
  3. Step 3: Cross multiply
    918x = 1,632 × 1,632
  4. Step 4: Simplify right side
    918x = 2,663,424
  5. Step 5: Solve for x
    x = 2,663,424/918
  6. Step 6: Final answer
    x = 2,901.33

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Why These Related Problems?

These problems maintain the same ratio (1.78) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.