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Finding the Third Proportional to 394,443 and 863,919

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Solution

The third proportional to 394,443 and 863,919 is: 1,892,177.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,443 : 863,919 = 863,919 : x
  2. Step 2: Convert to fraction form
    394,443/863,919 = 863,919/x
  3. Step 3: Cross multiply
    394,443x = 863,919 × 863,919
  4. Step 4: Simplify right side
    394,443x = 746,356,038,561
  5. Step 5: Solve for x
    x = 746,356,038,561/394,443
  6. Step 6: Final answer
    x = 1,892,177.17

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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.