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Finding the Third Proportional to 91,212.88 and 195,912.13

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Solution

The third proportional to 91,212.88 and 195,912.13 is: 420,791.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,212.88 : 195,912.13 = 195,912.13 : x
  2. Step 2: Convert to fraction form
    91,212.88/195,912.13 = 195,912.13/x
  3. Step 3: Cross multiply
    91,212.88x = 195,912.13 × 195,912.13
  4. Step 4: Simplify right side
    91,212.88x = 38,381,560,722.02
  5. Step 5: Solve for x
    x = 38,381,560,722.02/91,212.88
  6. Step 6: Final answer
    x = 420,791.04

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.