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Finding the Fourth Proportional to 331,934.75, 458,067.86 and 188,694.80

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Solution

The fourth proportional to 331,934.75, 458,067.86 and 188,694.80 is: 260,397.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,934.75 : 458,067.86 = 188,694.80 : x
  2. Step 2: Convert to fraction form
    331,934.75/458,067.86 = 188,694.80/x
  3. Step 3: Cross multiply
    331,934.75x = 458,067.86 × 188,694.80
  4. Step 4: Simplify right side
    331,934.75x = 86,435,019,995.31
  5. Step 5: Solve for x
    x = 86,435,019,995.31/331,934.75
  6. Step 6: Final answer
    x = 260,397.63

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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.