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Finding the Third Proportional to 991,400 and 2,126,626

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Solution

The third proportional to 991,400 and 2,126,626 is: 4,561,769.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    991,400 : 2,126,626 = 2,126,626 : x
  2. Step 2: Convert to fraction form
    991,400/2,126,626 = 2,126,626/x
  3. Step 3: Cross multiply
    991,400x = 2,126,626 × 2,126,626
  4. Step 4: Simplify right side
    991,400x = 4,522,538,143,876
  5. Step 5: Solve for x
    x = 4,522,538,143,876/991,400
  6. Step 6: Final answer
    x = 4,561,769.36

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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.