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Finding the Fourth Proportional to 622,785.62, 859,446.78 and 350,856.77

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Solution

The fourth proportional to 622,785.62, 859,446.78 and 350,856.77 is: 484,183.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    622,785.62 : 859,446.78 = 350,856.77 : x
  2. Step 2: Convert to fraction form
    622,785.62/859,446.78 = 350,856.77/x
  3. Step 3: Cross multiply
    622,785.62x = 859,446.78 × 350,856.77
  4. Step 4: Simplify right side
    622,785.62x = 301,542,721,217.70
  5. Step 5: Solve for x
    x = 301,542,721,217.70/622,785.62
  6. Step 6: Final answer
    x = 484,183.82

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1.5x scale

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.