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Finding the Fourth Proportional to 111,411.38, 167,223.18 and 69,163.60

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Solution

The fourth proportional to 111,411.38, 167,223.18 and 69,163.60 is: 103,811.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,411.38 : 167,223.18 = 69,163.60 : x
  2. Step 2: Convert to fraction form
    111,411.38/167,223.18 = 69,163.60/x
  3. Step 3: Cross multiply
    111,411.38x = 167,223.18 × 69,163.60
  4. Step 4: Simplify right side
    111,411.38x = 11,565,757,132.25
  5. Step 5: Solve for x
    x = 11,565,757,132.25/111,411.38
  6. Step 6: Final answer
    x = 103,811.27

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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.