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Finding the Third Proportional to 939 and 1,632

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Solution

The third proportional to 939 and 1,632 is: 2,836.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    939 : 1,632 = 1,632 : x
  2. Step 2: Convert to fraction form
    939/1,632 = 1,632/x
  3. Step 3: Cross multiply
    939x = 1,632 × 1,632
  4. Step 4: Simplify right side
    939x = 2,663,424
  5. Step 5: Solve for x
    x = 2,663,424/939
  6. Step 6: Final answer
    x = 2,836.45

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Why These Related Problems?

These problems maintain the same ratio (1.74) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.