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Finding the Third Proportional to 619,212.38 and 871,987.78

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Solution

The third proportional to 619,212.38 and 871,987.78 is: 1,227,951.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,212.38 : 871,987.78 = 871,987.78 : x
  2. Step 2: Convert to fraction form
    619,212.38/871,987.78 = 871,987.78/x
  3. Step 3: Cross multiply
    619,212.38x = 871,987.78 × 871,987.78
  4. Step 4: Simplify right side
    619,212.38x = 760,362,690,649.30
  5. Step 5: Solve for x
    x = 760,362,690,649.30/619,212.38
  6. Step 6: Final answer
    x = 1,227,951.38

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Why These Related Problems?

These problems maintain the same ratio (1.41) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.