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Finding the Fourth Proportional to 103,198.55, 154,812.17 and 36,622.85

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Solution

The fourth proportional to 103,198.55, 154,812.17 and 36,622.85 is: 54,939.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,198.55 : 154,812.17 = 36,622.85 : x
  2. Step 2: Convert to fraction form
    103,198.55/154,812.17 = 36,622.85/x
  3. Step 3: Cross multiply
    103,198.55x = 154,812.17 × 36,622.85
  4. Step 4: Simplify right side
    103,198.55x = 5,669,661,922.91
  5. Step 5: Solve for x
    x = 5,669,661,922.91/103,198.55
  6. Step 6: Final answer
    x = 54,939.36

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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.