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Finding the Fourth Proportional to 3,751,793.74, 5,177,738.12 and 2,120,351.88

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Solution

The fourth proportional to 3,751,793.74, 5,177,738.12 and 2,120,351.88 is: 2,926,234.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,751,793.74 : 5,177,738.12 = 2,120,351.88 : x
  2. Step 2: Convert to fraction form
    3,751,793.74/5,177,738.12 = 2,120,351.88/x
  3. Step 3: Cross multiply
    3,751,793.74x = 5,177,738.12 × 2,120,351.88
  4. Step 4: Simplify right side
    3,751,793.74x = 10,978,626,756,889.67
  5. Step 5: Solve for x
    x = 10,978,626,756,889.67/3,751,793.74
  6. Step 6: Final answer
    x = 2,926,234.09

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.