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Finding the Third Proportional to 991,395 and 2,126,619

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Solution

The third proportional to 991,395 and 2,126,619 is: 4,561,762.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    991,395 : 2,126,619 = 2,126,619 : x
  2. Step 2: Convert to fraction form
    991,395/2,126,619 = 2,126,619/x
  3. Step 3: Cross multiply
    991,395x = 2,126,619 × 2,126,619
  4. Step 4: Simplify right side
    991,395x = 4,522,508,371,161
  5. Step 5: Solve for x
    x = 4,522,508,371,161/991,395
  6. Step 6: Final answer
    x = 4,561,762.34

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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.