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Finding the Third Proportional to 43,892 and 68,412

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Solution

The third proportional to 43,892 and 68,412 is: 106,629.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,892 : 68,412 = 68,412 : x
  2. Step 2: Convert to fraction form
    43,892/68,412 = 68,412/x
  3. Step 3: Cross multiply
    43,892x = 68,412 × 68,412
  4. Step 4: Simplify right side
    43,892x = 4,680,201,744
  5. Step 5: Solve for x
    x = 4,680,201,744/43,892
  6. Step 6: Final answer
    x = 106,629.95

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Why These Related Problems?

These problems maintain the same ratio (1.56) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.