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Finding the Third Proportional to 49,989 and 77,373

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Solution

The third proportional to 49,989 and 77,373 is: 119,757.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    49,989 : 77,373 = 77,373 : x
  2. Step 2: Convert to fraction form
    49,989/77,373 = 77,373/x
  3. Step 3: Cross multiply
    49,989x = 77,373 × 77,373
  4. Step 4: Simplify right side
    49,989x = 5,986,581,129
  5. Step 5: Solve for x
    x = 5,986,581,129/49,989
  6. Step 6: Final answer
    x = 119,757.97

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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.