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Finding the Fourth Proportional to 54,573.92, 81,729.44 and 36,990.48

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Solution

The fourth proportional to 54,573.92, 81,729.44 and 36,990.48 is: 55,396.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,573.92 : 81,729.44 = 36,990.48 : x
  2. Step 2: Convert to fraction form
    54,573.92/81,729.44 = 36,990.48/x
  3. Step 3: Cross multiply
    54,573.92x = 81,729.44 × 36,990.48
  4. Step 4: Simplify right side
    54,573.92x = 3,023,211,215.73
  5. Step 5: Solve for x
    x = 3,023,211,215.73/54,573.92
  6. Step 6: Final answer
    x = 55,396.63

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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.