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Finding the Fourth Proportional to 54,993.75, 82,490.63 and 19,933.44

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Solution

The fourth proportional to 54,993.75, 82,490.63 and 19,933.44 is: 29,900.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,993.75 : 82,490.63 = 19,933.44 : x
  2. Step 2: Convert to fraction form
    54,993.75/82,490.63 = 19,933.44/x
  3. Step 3: Cross multiply
    54,993.75x = 82,490.63 × 19,933.44
  4. Step 4: Simplify right side
    54,993.75x = 1,644,321,924
  5. Step 5: Solve for x
    x = 1,644,321,924/54,993.75
  6. Step 6: Final answer
    x = 29,900.16

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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.