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Finding the Fourth Proportional to 381,234.60, 571,195.80 and 248,046.30

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Solution

The fourth proportional to 381,234.60, 571,195.80 and 248,046.30 is: 371,642.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,234.60 : 571,195.80 = 248,046.30 : x
  2. Step 2: Convert to fraction form
    381,234.60/571,195.80 = 248,046.30/x
  3. Step 3: Cross multiply
    381,234.60x = 571,195.80 × 248,046.30
  4. Step 4: Simplify right side
    381,234.60x = 141,683,004,765.54
  5. Step 5: Solve for x
    x = 141,683,004,765.54/381,234.60
  6. Step 6: Final answer
    x = 371,642.57

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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.