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Finding the Third Proportional to 396,086 and 855,302

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Solution

The third proportional to 396,086 and 855,302 is: 1,846,925.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,086 : 855,302 = 855,302 : x
  2. Step 2: Convert to fraction form
    396,086/855,302 = 855,302/x
  3. Step 3: Cross multiply
    396,086x = 855,302 × 855,302
  4. Step 4: Simplify right side
    396,086x = 731,541,511,204
  5. Step 5: Solve for x
    x = 731,541,511,204/396,086
  6. Step 6: Final answer
    x = 1,846,925.95

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.