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Finding the Third Proportional to 52,442 and 80,220

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Solution

The third proportional to 52,442 and 80,220 is: 122,711.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,442 : 80,220 = 80,220 : x
  2. Step 2: Convert to fraction form
    52,442/80,220 = 80,220/x
  3. Step 3: Cross multiply
    52,442x = 80,220 × 80,220
  4. Step 4: Simplify right side
    52,442x = 6,435,248,400
  5. Step 5: Solve for x
    x = 6,435,248,400/52,442
  6. Step 6: Final answer
    x = 122,711.73

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Why These Related Problems?

These problems maintain the same ratio (1.53) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.