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Finding the Fourth Proportional to 111,864.13, 167,712.39 and 67,480.54

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Solution

The fourth proportional to 111,864.13, 167,712.39 and 67,480.54 is: 101,170.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,864.13 : 167,712.39 = 67,480.54 : x
  2. Step 2: Convert to fraction form
    111,864.13/167,712.39 = 67,480.54/x
  3. Step 3: Cross multiply
    111,864.13x = 167,712.39 × 67,480.54
  4. Step 4: Simplify right side
    111,864.13x = 11,317,321,465.93
  5. Step 5: Solve for x
    x = 11,317,321,465.93/111,864.13
  6. Step 6: Final answer
    x = 101,170.25

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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.