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Finding the Third Proportional to 38,439.50 and 84,446

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Solution

The third proportional to 38,439.50 and 84,446 is: 185,515.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,439.50 : 84,446 = 84,446 : x
  2. Step 2: Convert to fraction form
    38,439.50/84,446 = 84,446/x
  3. Step 3: Cross multiply
    38,439.50x = 84,446 × 84,446
  4. Step 4: Simplify right side
    38,439.50x = 7,131,126,916
  5. Step 5: Solve for x
    x = 7,131,126,916/38,439.50
  6. Step 6: Final answer
    x = 185,515.60

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Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.