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Finding the Third Proportional to 767 and 1,161

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Solution

The third proportional to 767 and 1,161 is: 1,757.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    767 : 1,161 = 1,161 : x
  2. Step 2: Convert to fraction form
    767/1,161 = 1,161/x
  3. Step 3: Cross multiply
    767x = 1,161 × 1,161
  4. Step 4: Simplify right side
    767x = 1,347,921
  5. Step 5: Solve for x
    x = 1,347,921/767
  6. Step 6: Final answer
    x = 1,757.39

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.