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Finding the Fourth Proportional to 167,378.66, 251,067.78 and 42,719.66

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Solution

The fourth proportional to 167,378.66, 251,067.78 and 42,719.66 is: 64,079.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    167,378.66 : 251,067.78 = 42,719.66 : x
  2. Step 2: Convert to fraction form
    167,378.66/251,067.78 = 42,719.66/x
  3. Step 3: Cross multiply
    167,378.66x = 251,067.78 × 42,719.66
  4. Step 4: Simplify right side
    167,378.66x = 10,725,530,198.55
  5. Step 5: Solve for x
    x = 10,725,530,198.55/167,378.66
  6. Step 6: Final answer
    x = 64,079.44

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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.