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Finding the Fourth Proportional to 125,980.11, 188,980.20 and 41,736.87

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Solution

The fourth proportional to 125,980.11, 188,980.20 and 41,736.87 is: 62,608.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,980.11 : 188,980.20 = 41,736.87 : x
  2. Step 2: Convert to fraction form
    125,980.11/188,980.20 = 41,736.87/x
  3. Step 3: Cross multiply
    125,980.11x = 188,980.20 × 41,736.87
  4. Step 4: Simplify right side
    125,980.11x = 7,887,442,039.97
  5. Step 5: Solve for x
    x = 7,887,442,039.97/125,980.11
  6. Step 6: Final answer
    x = 62,608.63

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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.