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Finding the Fourth Proportional to 57,608.52, 86,723.99 and 51,815.24

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Solution

The fourth proportional to 57,608.52, 86,723.99 and 51,815.24 is: 78,002.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,608.52 : 86,723.99 = 51,815.24 : x
  2. Step 2: Convert to fraction form
    57,608.52/86,723.99 = 51,815.24/x
  3. Step 3: Cross multiply
    57,608.52x = 86,723.99 × 51,815.24
  4. Step 4: Simplify right side
    57,608.52x = 4,493,623,662.91
  5. Step 5: Solve for x
    x = 4,493,623,662.91/57,608.52
  6. Step 6: Final answer
    x = 78,002.76

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.