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Finding the Fourth Proportional to 111,745.20, 167,569.20 and 36,836.40

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Solution

The fourth proportional to 111,745.20, 167,569.20 and 36,836.40 is: 55,238.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,745.20 : 167,569.20 = 36,836.40 : x
  2. Step 2: Convert to fraction form
    111,745.20/167,569.20 = 36,836.40/x
  3. Step 3: Cross multiply
    111,745.20x = 167,569.20 × 36,836.40
  4. Step 4: Simplify right side
    111,745.20x = 6,172,646,078.88
  5. Step 5: Solve for x
    x = 6,172,646,078.88/111,745.20
  6. Step 6: Final answer
    x = 55,238.58

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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.