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Finding the Fourth Proportional to 124,379.36, 171,638.52 and 67,789.52

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Solution

The fourth proportional to 124,379.36, 171,638.52 and 67,789.52 is: 93,546.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,379.36 : 171,638.52 = 67,789.52 : x
  2. Step 2: Convert to fraction form
    124,379.36/171,638.52 = 67,789.52/x
  3. Step 3: Cross multiply
    124,379.36x = 171,638.52 × 67,789.52
  4. Step 4: Simplify right side
    124,379.36x = 11,635,292,884.31
  5. Step 5: Solve for x
    x = 11,635,292,884.31/124,379.36
  6. Step 6: Final answer
    x = 93,546.81

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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.