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Finding the Third Proportional to 702 and 931

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Solution

The third proportional to 702 and 931 is: 1,234.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    702 : 931 = 931 : x
  2. Step 2: Convert to fraction form
    702/931 = 931/x
  3. Step 3: Cross multiply
    702x = 931 × 931
  4. Step 4: Simplify right side
    702x = 866,761
  5. Step 5: Solve for x
    x = 866,761/702
  6. Step 6: Final answer
    x = 1,234.70

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Why These Related Problems?

These problems maintain the same ratio (1.33) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.