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Finding the Third Proportional to 619,215.75 and 871,992

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Solution

The third proportional to 619,215.75 and 871,992 is: 1,227,956.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,215.75 : 871,992 = 871,992 : x
  2. Step 2: Convert to fraction form
    619,215.75/871,992 = 871,992/x
  3. Step 3: Cross multiply
    619,215.75x = 871,992 × 871,992
  4. Step 4: Simplify right side
    619,215.75x = 760,370,048,064
  5. Step 5: Solve for x
    x = 760,370,048,064/619,215.75
  6. Step 6: Final answer
    x = 1,227,956.57

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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.