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Finding the Fourth Proportional to 203,912.70, 305,285.85 and 203,912.70

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Solution

The fourth proportional to 203,912.70, 305,285.85 and 203,912.70 is: 305,285.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,912.70 : 305,285.85 = 203,912.70 : x
  2. Step 2: Convert to fraction form
    203,912.70/305,285.85 = 203,912.70/x
  3. Step 3: Cross multiply
    203,912.70x = 305,285.85 × 203,912.70
  4. Step 4: Simplify right side
    203,912.70x = 62,251,661,945.30
  5. Step 5: Solve for x
    x = 62,251,661,945.30/203,912.70
  6. Step 6: Final answer
    x = 305,285.85

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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.