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Finding the Third Proportional to 766 and 1,748

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Solution

The third proportional to 766 and 1,748 is: 3,988.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    766 : 1,748 = 1,748 : x
  2. Step 2: Convert to fraction form
    766/1,748 = 1,748/x
  3. Step 3: Cross multiply
    766x = 1,748 × 1,748
  4. Step 4: Simplify right side
    766x = 3,055,504
  5. Step 5: Solve for x
    x = 3,055,504/766
  6. Step 6: Final answer
    x = 3,988.91

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Why These Related Problems?

These problems maintain the same ratio (2.28) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.