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Finding the Third Proportional to 1,821,786.19 and 3,923,824.78

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Solution

The third proportional to 1,821,786.19 and 3,923,824.78 is: 8,451,266.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,821,786.19 : 3,923,824.78 = 3,923,824.78 : x
  2. Step 2: Convert to fraction form
    1,821,786.19/3,923,824.78 = 3,923,824.78/x
  3. Step 3: Cross multiply
    1,821,786.19x = 3,923,824.78 × 3,923,824.78
  4. Step 4: Simplify right side
    1,821,786.19x = 15,396,400,913,951.61
  5. Step 5: Solve for x
    x = 15,396,400,913,951.61/1,821,786.19
  6. Step 6: Final answer
    x = 8,451,266.69

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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.