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Finding the Third Proportional to 67,279 and 91,414

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Solution

The third proportional to 67,279 and 91,414 is: 124,206.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,279 : 91,414 = 91,414 : x
  2. Step 2: Convert to fraction form
    67,279/91,414 = 91,414/x
  3. Step 3: Cross multiply
    67,279x = 91,414 × 91,414
  4. Step 4: Simplify right side
    67,279x = 8,356,519,396
  5. Step 5: Solve for x
    x = 8,356,519,396/67,279
  6. Step 6: Final answer
    x = 124,206.95

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Why These Related Problems?

These problems maintain the same ratio (1.36) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.