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Finding the Third Proportional to 31,702 and 66,941

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Solution

The third proportional to 31,702 and 66,941 is: 141,350.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,702 : 66,941 = 66,941 : x
  2. Step 2: Convert to fraction form
    31,702/66,941 = 66,941/x
  3. Step 3: Cross multiply
    31,702x = 66,941 × 66,941
  4. Step 4: Simplify right side
    31,702x = 4,481,097,481
  5. Step 5: Solve for x
    x = 4,481,097,481/31,702
  6. Step 6: Final answer
    x = 141,350.62

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Why These Related Problems?

These problems maintain the same ratio (2.11) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.