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Finding the Fourth Proportional to 311,961.70, 467,942.55 and 238,233.70

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Solution

The fourth proportional to 311,961.70, 467,942.55 and 238,233.70 is: 357,350.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,961.70 : 467,942.55 = 238,233.70 : x
  2. Step 2: Convert to fraction form
    311,961.70/467,942.55 = 238,233.70/x
  3. Step 3: Cross multiply
    311,961.70x = 467,942.55 × 238,233.70
  4. Step 4: Simplify right side
    311,961.70x = 111,479,685,073.94
  5. Step 5: Solve for x
    x = 111,479,685,073.94/311,961.70
  6. Step 6: Final answer
    x = 357,350.55

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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.