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Finding the Fourth Proportional to 65,850.55, 98,797.99 and 20,879.24

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Solution

The fourth proportional to 65,850.55, 98,797.99 and 20,879.24 is: 31,325.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,850.55 : 98,797.99 = 20,879.24 : x
  2. Step 2: Convert to fraction form
    65,850.55/98,797.99 = 20,879.24/x
  3. Step 3: Cross multiply
    65,850.55x = 98,797.99 × 20,879.24
  4. Step 4: Simplify right side
    65,850.55x = 2,062,826,944.73
  5. Step 5: Solve for x
    x = 2,062,826,944.73/65,850.55
  6. Step 6: Final answer
    x = 31,325.89

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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.