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Finding the Third Proportional to 1,006 and 1,691

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Solution

The third proportional to 1,006 and 1,691 is: 2,842.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,006 : 1,691 = 1,691 : x
  2. Step 2: Convert to fraction form
    1,006/1,691 = 1,691/x
  3. Step 3: Cross multiply
    1,006x = 1,691 × 1,691
  4. Step 4: Simplify right side
    1,006x = 2,859,481
  5. Step 5: Solve for x
    x = 2,859,481/1,006
  6. Step 6: Final answer
    x = 2,842.43

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Why These Related Problems?

These problems maintain the same ratio (1.68) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.