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Finding the Fourth Proportional to 56,753.94, 85,183.42 and 28,693.78

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Solution

The fourth proportional to 56,753.94, 85,183.42 and 28,693.78 is: 43,067.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,753.94 : 85,183.42 = 28,693.78 : x
  2. Step 2: Convert to fraction form
    56,753.94/85,183.42 = 28,693.78/x
  3. Step 3: Cross multiply
    56,753.94x = 85,183.42 × 28,693.78
  4. Step 4: Simplify right side
    56,753.94x = 2,444,234,313.13
  5. Step 5: Solve for x
    x = 2,444,234,313.13/56,753.94
  6. Step 6: Final answer
    x = 43,067.22

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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.