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Finding the Fourth Proportional to 331,155.82, 496,807.80 and 120,793.76

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Solution

The fourth proportional to 331,155.82, 496,807.80 and 120,793.76 is: 181,217.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,155.82 : 496,807.80 = 120,793.76 : x
  2. Step 2: Convert to fraction form
    331,155.82/496,807.80 = 120,793.76/x
  3. Step 3: Cross multiply
    331,155.82x = 496,807.80 × 120,793.76
  4. Step 4: Simplify right side
    331,155.82x = 60,011,282,159.33
  5. Step 5: Solve for x
    x = 60,011,282,159.33/331,155.82
  6. Step 6: Final answer
    x = 181,217.66

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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.