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Finding the Fourth Proportional to 168,391.92, 232,377.30 and 91,908.48

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Solution

The fourth proportional to 168,391.92, 232,377.30 and 91,908.48 is: 126,831.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,391.92 : 232,377.30 = 91,908.48 : x
  2. Step 2: Convert to fraction form
    168,391.92/232,377.30 = 91,908.48/x
  3. Step 3: Cross multiply
    168,391.92x = 232,377.30 × 91,908.48
  4. Step 4: Simplify right side
    168,391.92x = 21,357,444,429.50
  5. Step 5: Solve for x
    x = 21,357,444,429.50/168,391.92
  6. Step 6: Final answer
    x = 126,831.77

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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.