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Finding the Fourth Proportional to 228,608.16, 315,481.80 and 126,635.19

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Solution

The fourth proportional to 228,608.16, 315,481.80 and 126,635.19 is: 174,757.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,608.16 : 315,481.80 = 126,635.19 : x
  2. Step 2: Convert to fraction form
    228,608.16/315,481.80 = 126,635.19/x
  3. Step 3: Cross multiply
    228,608.16x = 315,481.80 × 126,635.19
  4. Step 4: Simplify right side
    228,608.16x = 39,951,097,684.54
  5. Step 5: Solve for x
    x = 39,951,097,684.54/228,608.16
  6. Step 6: Final answer
    x = 174,757.97

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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.