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Finding the Third Proportional to 621,441 and 1,361,448

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Solution

The third proportional to 621,441 and 1,361,448 is: 2,982,649.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,441 : 1,361,448 = 1,361,448 : x
  2. Step 2: Convert to fraction form
    621,441/1,361,448 = 1,361,448/x
  3. Step 3: Cross multiply
    621,441x = 1,361,448 × 1,361,448
  4. Step 4: Simplify right side
    621,441x = 1,853,540,656,704
  5. Step 5: Solve for x
    x = 1,853,540,656,704/621,441
  6. Step 6: Final answer
    x = 2,982,649.45

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.