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Finding the Third Proportional to 43,891 and 62,721

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Solution

The third proportional to 43,891 and 62,721 is: 89,629.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,891 : 62,721 = 62,721 : x
  2. Step 2: Convert to fraction form
    43,891/62,721 = 62,721/x
  3. Step 3: Cross multiply
    43,891x = 62,721 × 62,721
  4. Step 4: Simplify right side
    43,891x = 3,933,923,841
  5. Step 5: Solve for x
    x = 3,933,923,841/43,891
  6. Step 6: Final answer
    x = 89,629.40

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Why These Related Problems?

These problems maintain the same ratio (1.43) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.