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Finding the Fourth Proportional to 167,397.16, 251,067.99 and 55,078.78

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Solution

The fourth proportional to 167,397.16, 251,067.99 and 55,078.78 is: 82,609.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    167,397.16 : 251,067.99 = 55,078.78 : x
  2. Step 2: Convert to fraction form
    167,397.16/251,067.99 = 55,078.78/x
  3. Step 3: Cross multiply
    167,397.16x = 251,067.99 × 55,078.78
  4. Step 4: Simplify right side
    167,397.16x = 13,828,517,330.91
  5. Step 5: Solve for x
    x = 13,828,517,330.91/167,397.16
  6. Step 6: Final answer
    x = 82,609.03

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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.