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Finding the Fourth Proportional to 24,879.64, 37,319.46 and 20,487.96

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Solution

The fourth proportional to 24,879.64, 37,319.46 and 20,487.96 is: 30,731.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    24,879.64 : 37,319.46 = 20,487.96 : x
  2. Step 2: Convert to fraction form
    24,879.64/37,319.46 = 20,487.96/x
  3. Step 3: Cross multiply
    24,879.64x = 37,319.46 × 20,487.96
  4. Step 4: Simplify right side
    24,879.64x = 764,599,603.70
  5. Step 5: Solve for x
    x = 764,599,603.70/24,879.64
  6. Step 6: Final answer
    x = 30,731.94

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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.