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Finding the Fourth Proportional to 311,843.70, 467,765.55 and 262,854.90

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Solution

The fourth proportional to 311,843.70, 467,765.55 and 262,854.90 is: 394,282.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,843.70 : 467,765.55 = 262,854.90 : x
  2. Step 2: Convert to fraction form
    311,843.70/467,765.55 = 262,854.90/x
  3. Step 3: Cross multiply
    311,843.70x = 467,765.55 × 262,854.90
  4. Step 4: Simplify right side
    311,843.70x = 122,954,466,868.70
  5. Step 5: Solve for x
    x = 122,954,466,868.70/311,843.70
  6. Step 6: Final answer
    x = 394,282.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.