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Finding the Fourth Proportional to 168,831.76, 232,993.92 and 93,380.80

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Solution

The fourth proportional to 168,831.76, 232,993.92 and 93,380.80 is: 128,868.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,831.76 : 232,993.92 = 93,380.80 : x
  2. Step 2: Convert to fraction form
    168,831.76/232,993.92 = 93,380.80/x
  3. Step 3: Cross multiply
    168,831.76x = 232,993.92 × 93,380.80
  4. Step 4: Simplify right side
    168,831.76x = 21,757,158,644.74
  5. Step 5: Solve for x
    x = 21,757,158,644.74/168,831.76
  6. Step 6: Final answer
    x = 128,868.87

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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.