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Finding the Fourth Proportional to 625,510.44, 863,195.02 and 353,568.78

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Solution

The fourth proportional to 625,510.44, 863,195.02 and 353,568.78 is: 487,919.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    625,510.44 : 863,195.02 = 353,568.78 : x
  2. Step 2: Convert to fraction form
    625,510.44/863,195.02 = 353,568.78/x
  3. Step 3: Cross multiply
    625,510.44x = 863,195.02 × 353,568.78
  4. Step 4: Simplify right side
    625,510.44x = 305,198,809,239.55
  5. Step 5: Solve for x
    x = 305,198,809,239.55/625,510.44
  6. Step 6: Final answer
    x = 487,919.61

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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.