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Finding the Fourth Proportional to 121,616.48, 167,831.26 and 67,898.36

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Solution

The fourth proportional to 121,616.48, 167,831.26 and 67,898.36 is: 93,700.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,616.48 : 167,831.26 = 67,898.36 : x
  2. Step 2: Convert to fraction form
    121,616.48/167,831.26 = 67,898.36/x
  3. Step 3: Cross multiply
    121,616.48x = 167,831.26 × 67,898.36
  4. Step 4: Simplify right side
    121,616.48x = 11,395,467,310.73
  5. Step 5: Solve for x
    x = 11,395,467,310.73/121,616.48
  6. Step 6: Final answer
    x = 93,700.03

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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.