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Finding the Fourth Proportional to 79,641.82, 119,338.80 and 29,708.56

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Solution

The fourth proportional to 79,641.82, 119,338.80 and 29,708.56 is: 44,516.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,641.82 : 119,338.80 = 29,708.56 : x
  2. Step 2: Convert to fraction form
    79,641.82/119,338.80 = 29,708.56/x
  3. Step 3: Cross multiply
    79,641.82x = 119,338.80 × 29,708.56
  4. Step 4: Simplify right side
    79,641.82x = 3,545,383,900.13
  5. Step 5: Solve for x
    x = 3,545,383,900.13/79,641.82
  6. Step 6: Final answer
    x = 44,516.61

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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.