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Finding the Fourth Proportional to 71,979.46, 108,005.65 and 48,556.69

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Solution

The fourth proportional to 71,979.46, 108,005.65 and 48,556.69 is: 72,859.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,979.46 : 108,005.65 = 48,556.69 : x
  2. Step 2: Convert to fraction form
    71,979.46/108,005.65 = 48,556.69/x
  3. Step 3: Cross multiply
    71,979.46x = 108,005.65 × 48,556.69
  4. Step 4: Simplify right side
    71,979.46x = 5,244,396,473.89
  5. Step 5: Solve for x
    x = 5,244,396,473.89/71,979.46
  6. Step 6: Final answer
    x = 72,859.63

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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.