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Finding the Fourth Proportional to 167,886.93, 231,679.08 and 91,407.54

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Solution

The fourth proportional to 167,886.93, 231,679.08 and 91,407.54 is: 126,139.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    167,886.93 : 231,679.08 = 91,407.54 : x
  2. Step 2: Convert to fraction form
    167,886.93/231,679.08 = 91,407.54/x
  3. Step 3: Cross multiply
    167,886.93x = 231,679.08 × 91,407.54
  4. Step 4: Simplify right side
    167,886.93x = 21,177,214,772.26
  5. Step 5: Solve for x
    x = 21,177,214,772.26/167,886.93
  6. Step 6: Final answer
    x = 126,139.75

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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.