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Finding the Fourth Proportional to 311,125.56, 429,174.36 and 196,363.42

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Solution

The fourth proportional to 311,125.56, 429,174.36 and 196,363.42 is: 270,868.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,125.56 : 429,174.36 = 196,363.42 : x
  2. Step 2: Convert to fraction form
    311,125.56/429,174.36 = 196,363.42/x
  3. Step 3: Cross multiply
    311,125.56x = 429,174.36 × 196,363.42
  4. Step 4: Simplify right side
    311,125.56x = 84,274,145,105.91
  5. Step 5: Solve for x
    x = 84,274,145,105.91/311,125.56
  6. Step 6: Final answer
    x = 270,868.60

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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.