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Finding the Fourth Proportional to 203,940.99, 305,879.90 and 104,174.91

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Solution

The fourth proportional to 203,940.99, 305,879.90 and 104,174.91 is: 156,246.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,940.99 : 305,879.90 = 104,174.91 : x
  2. Step 2: Convert to fraction form
    203,940.99/305,879.90 = 104,174.91/x
  3. Step 3: Cross multiply
    203,940.99x = 305,879.90 × 104,174.91
  4. Step 4: Simplify right side
    203,940.99x = 31,865,010,532.43
  5. Step 5: Solve for x
    x = 31,865,010,532.43/203,940.99
  6. Step 6: Final answer
    x = 156,246.23

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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.