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Finding the Fourth Proportional to 72,379.82, 108,591.68 and 34,932.92

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Solution

The fourth proportional to 72,379.82, 108,591.68 and 34,932.92 is: 52,409.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,379.82 : 108,591.68 = 34,932.92 : x
  2. Step 2: Convert to fraction form
    72,379.82/108,591.68 = 34,932.92/x
  3. Step 3: Cross multiply
    72,379.82x = 108,591.68 × 34,932.92
  4. Step 4: Simplify right side
    72,379.82x = 3,793,424,014.48
  5. Step 5: Solve for x
    x = 3,793,424,014.48/72,379.82
  6. Step 6: Final answer
    x = 52,409.97

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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.