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Finding the Fourth Proportional to 28,791.25, 43,062.03 and 16,916.75

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Solution

The fourth proportional to 28,791.25, 43,062.03 and 16,916.75 is: 25,301.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,791.25 : 43,062.03 = 16,916.75 : x
  2. Step 2: Convert to fraction form
    28,791.25/43,062.03 = 16,916.75/x
  3. Step 3: Cross multiply
    28,791.25x = 43,062.03 × 16,916.75
  4. Step 4: Simplify right side
    28,791.25x = 728,469,542.17
  5. Step 5: Solve for x
    x = 728,469,542.17/28,791.25
  6. Step 6: Final answer
    x = 25,301.77

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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.