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Finding the Fourth Proportional to 25,469.94, 38,205.45 and 7,939.92

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Solution

The fourth proportional to 25,469.94, 38,205.45 and 7,939.92 is: 11,910.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,469.94 : 38,205.45 = 7,939.92 : x
  2. Step 2: Convert to fraction form
    25,469.94/38,205.45 = 7,939.92/x
  3. Step 3: Cross multiply
    25,469.94x = 38,205.45 × 7,939.92
  4. Step 4: Simplify right side
    25,469.94x = 303,348,216.56
  5. Step 5: Solve for x
    x = 303,348,216.56/25,469.94
  6. Step 6: Final answer
    x = 11,910.05

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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.