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Finding the Fourth Proportional to 111,866.63, 154,375.97 and 60,879.56

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Solution

The fourth proportional to 111,866.63, 154,375.97 and 60,879.56 is: 84,013.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,866.63 : 154,375.97 = 60,879.56 : x
  2. Step 2: Convert to fraction form
    111,866.63/154,375.97 = 60,879.56/x
  3. Step 3: Cross multiply
    111,866.63x = 154,375.97 × 60,879.56
  4. Step 4: Simplify right side
    111,866.63x = 9,398,340,051.90
  5. Step 5: Solve for x
    x = 9,398,340,051.90/111,866.63
  6. Step 6: Final answer
    x = 84,013.80

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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.