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Finding the Third Proportional to 43,972 and 68,166

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Solution

The third proportional to 43,972 and 68,166 is: 105,671.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,972 : 68,166 = 68,166 : x
  2. Step 2: Convert to fraction form
    43,972/68,166 = 68,166/x
  3. Step 3: Cross multiply
    43,972x = 68,166 × 68,166
  4. Step 4: Simplify right side
    43,972x = 4,646,603,556
  5. Step 5: Solve for x
    x = 4,646,603,556/43,972
  6. Step 6: Final answer
    x = 105,671.87

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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.