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Finding the Fourth Proportional to 125,718.78, 188,589.57 and 41,479.19

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Solution

The fourth proportional to 125,718.78, 188,589.57 and 41,479.19 is: 62,222.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,718.78 : 188,589.57 = 41,479.19 : x
  2. Step 2: Convert to fraction form
    125,718.78/188,589.57 = 41,479.19/x
  3. Step 3: Cross multiply
    125,718.78x = 188,589.57 × 41,479.19
  4. Step 4: Simplify right side
    125,718.78x = 7,822,541,663.10
  5. Step 5: Solve for x
    x = 7,822,541,663.10/125,718.78
  6. Step 6: Final answer
    x = 62,222.54

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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.