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Finding the Fourth Proportional to 118,586.57, 177,594.80 and 67,831.77

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Solution

The fourth proportional to 118,586.57, 177,594.80 and 67,831.77 is: 101,584.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,586.57 : 177,594.80 = 67,831.77 : x
  2. Step 2: Convert to fraction form
    118,586.57/177,594.80 = 67,831.77/x
  3. Step 3: Cross multiply
    118,586.57x = 177,594.80 × 67,831.77
  4. Step 4: Simplify right side
    118,586.57x = 12,046,568,399.66
  5. Step 5: Solve for x
    x = 12,046,568,399.66/118,586.57
  6. Step 6: Final answer
    x = 101,584.59

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.