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Finding the Third Proportional to 79,868 and 133,116

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Solution

The third proportional to 79,868 and 133,116 is: 221,864.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,868 : 133,116 = 133,116 : x
  2. Step 2: Convert to fraction form
    79,868/133,116 = 133,116/x
  3. Step 3: Cross multiply
    79,868x = 133,116 × 133,116
  4. Step 4: Simplify right side
    79,868x = 17,719,869,456
  5. Step 5: Solve for x
    x = 17,719,869,456/79,868
  6. Step 6: Final answer
    x = 221,864.44

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Why These Related Problems?

These problems maintain the same ratio (1.67) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.