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Finding the Third Proportional to 792 and 1,669

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Solution

The third proportional to 792 and 1,669 is: 3,517.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    792 : 1,669 = 1,669 : x
  2. Step 2: Convert to fraction form
    792/1,669 = 1,669/x
  3. Step 3: Cross multiply
    792x = 1,669 × 1,669
  4. Step 4: Simplify right side
    792x = 2,785,561
  5. Step 5: Solve for x
    x = 2,785,561/792
  6. Step 6: Final answer
    x = 3,517.12

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Why These Related Problems?

These problems maintain the same ratio (2.11) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.