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Finding the Fourth Proportional to 96,391.64, 132,978.58 and 58,129.92

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Solution

The fourth proportional to 96,391.64, 132,978.58 and 58,129.92 is: 80,194.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    96,391.64 : 132,978.58 = 58,129.92 : x
  2. Step 2: Convert to fraction form
    96,391.64/132,978.58 = 58,129.92/x
  3. Step 3: Cross multiply
    96,391.64x = 132,978.58 × 58,129.92
  4. Step 4: Simplify right side
    96,391.64x = 7,730,034,071.79
  5. Step 5: Solve for x
    x = 7,730,034,071.79/96,391.64
  6. Step 6: Final answer
    x = 80,194.03

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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.