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Finding the Fourth Proportional to 111,879.10, 154,314.57 and 73,626.46

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Solution

The fourth proportional to 111,879.10, 154,314.57 and 73,626.46 is: 101,552.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,879.10 : 154,314.57 = 73,626.46 : x
  2. Step 2: Convert to fraction form
    111,879.10/154,314.57 = 73,626.46/x
  3. Step 3: Cross multiply
    111,879.10x = 154,314.57 × 73,626.46
  4. Step 4: Simplify right side
    111,879.10x = 11,361,635,515.52
  5. Step 5: Solve for x
    x = 11,361,635,515.52/111,879.10
  6. Step 6: Final answer
    x = 101,552.80

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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.