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Finding the Third Proportional to 80,400 and 124,368

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Solution

The third proportional to 80,400 and 124,368 is: 192,380.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,400 : 124,368 = 124,368 : x
  2. Step 2: Convert to fraction form
    80,400/124,368 = 124,368/x
  3. Step 3: Cross multiply
    80,400x = 124,368 × 124,368
  4. Step 4: Simplify right side
    80,400x = 15,467,399,424
  5. Step 5: Solve for x
    x = 15,467,399,424/80,400
  6. Step 6: Final answer
    x = 192,380.59

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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.