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Finding the Third Proportional to 42,822 and 68,193

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Solution

The third proportional to 42,822 and 68,193 is: 108,595.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,822 : 68,193 = 68,193 : x
  2. Step 2: Convert to fraction form
    42,822/68,193 = 68,193/x
  3. Step 3: Cross multiply
    42,822x = 68,193 × 68,193
  4. Step 4: Simplify right side
    42,822x = 4,650,285,249
  5. Step 5: Solve for x
    x = 4,650,285,249/42,822
  6. Step 6: Final answer
    x = 108,595.70

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Why These Related Problems?

These problems maintain the same ratio (1.59) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.