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Finding the Fourth Proportional to 353,421.92, 487,715.52 and 196,252.56

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Solution

The fourth proportional to 353,421.92, 487,715.52 and 196,252.56 is: 270,824.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,421.92 : 487,715.52 = 196,252.56 : x
  2. Step 2: Convert to fraction form
    353,421.92/487,715.52 = 196,252.56/x
  3. Step 3: Cross multiply
    353,421.92x = 487,715.52 × 196,252.56
  4. Step 4: Simplify right side
    353,421.92x = 95,715,419,351.73
  5. Step 5: Solve for x
    x = 95,715,419,351.73/353,421.92
  6. Step 6: Final answer
    x = 270,824.80

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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.