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Finding the Fourth Proportional to 135,616.80, 203,425.20 and 113,455.20

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Solution

The fourth proportional to 135,616.80, 203,425.20 and 113,455.20 is: 170,182.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,616.80 : 203,425.20 = 113,455.20 : x
  2. Step 2: Convert to fraction form
    135,616.80/203,425.20 = 113,455.20/x
  3. Step 3: Cross multiply
    135,616.80x = 203,425.20 × 113,455.20
  4. Step 4: Simplify right side
    135,616.80x = 23,079,646,751.04
  5. Step 5: Solve for x
    x = 23,079,646,751.04/135,616.80
  6. Step 6: Final answer
    x = 170,182.80

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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.