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Finding the Third Proportional to 391,176.75 and 857,015.25

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Solution

The third proportional to 391,176.75 and 857,015.25 is: 1,877,604.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,176.75 : 857,015.25 = 857,015.25 : x
  2. Step 2: Convert to fraction form
    391,176.75/857,015.25 = 857,015.25/x
  3. Step 3: Cross multiply
    391,176.75x = 857,015.25 × 857,015.25
  4. Step 4: Simplify right side
    391,176.75x = 734,475,138,732.56
  5. Step 5: Solve for x
    x = 734,475,138,732.56/391,176.75
  6. Step 6: Final answer
    x = 1,877,604.28

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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.