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Finding the Third Proportional to 765.28 and 1,171.97

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Solution

The third proportional to 765.28 and 1,171.97 is: 1,794.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    765.28 : 1,171.97 = 1,171.97 : x
  2. Step 2: Convert to fraction form
    765.28/1,171.97 = 1,171.97/x
  3. Step 3: Cross multiply
    765.28x = 1,171.97 × 1,171.97
  4. Step 4: Simplify right side
    765.28x = 1,373,510.75
  5. Step 5: Solve for x
    x = 1,373,510.75/765.28
  6. Step 6: Final answer
    x = 1,794.78

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Why These Related Problems?

These problems maintain the same ratio (1.53) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.