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Finding the Third Proportional to 492 and 763

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Solution

The third proportional to 492 and 763 is: 1,183.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    492 : 763 = 763 : x
  2. Step 2: Convert to fraction form
    492/763 = 763/x
  3. Step 3: Cross multiply
    492x = 763 × 763
  4. Step 4: Simplify right side
    492x = 582,169
  5. Step 5: Solve for x
    x = 582,169/492
  6. Step 6: Final answer
    x = 1,183.27

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.