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Finding the Fourth Proportional to 111,855.43, 167,783.18 and 92,092.48

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Solution

The fourth proportional to 111,855.43, 167,783.18 and 92,092.48 is: 138,138.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,855.43 : 167,783.18 = 92,092.48 : x
  2. Step 2: Convert to fraction form
    111,855.43/167,783.18 = 92,092.48/x
  3. Step 3: Cross multiply
    111,855.43x = 167,783.18 × 92,092.48
  4. Step 4: Simplify right side
    111,855.43x = 15,451,569,148.49
  5. Step 5: Solve for x
    x = 15,451,569,148.49/111,855.43
  6. Step 6: Final answer
    x = 138,138.75

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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.