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Finding the Third Proportional to 57,431 and 124,087

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Solution

The third proportional to 57,431 and 124,087 is: 268,105.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,431 : 124,087 = 124,087 : x
  2. Step 2: Convert to fraction form
    57,431/124,087 = 124,087/x
  3. Step 3: Cross multiply
    57,431x = 124,087 × 124,087
  4. Step 4: Simplify right side
    57,431x = 15,397,583,569
  5. Step 5: Solve for x
    x = 15,397,583,569/57,431
  6. Step 6: Final answer
    x = 268,105.79

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.