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Finding the Fourth Proportional to 80,668.77, 111,293.13 and 48,826.05

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Solution

The fourth proportional to 80,668.77, 111,293.13 and 48,826.05 is: 67,361.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,668.77 : 111,293.13 = 48,826.05 : x
  2. Step 2: Convert to fraction form
    80,668.77/111,293.13 = 48,826.05/x
  3. Step 3: Cross multiply
    80,668.77x = 111,293.13 × 48,826.05
  4. Step 4: Simplify right side
    80,668.77x = 5,434,003,930.04
  5. Step 5: Solve for x
    x = 5,434,003,930.04/80,668.77
  6. Step 6: Final answer
    x = 67,361.93

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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.