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Finding the Fourth Proportional to 57,569.54, 86,344.89 and 40,879.08

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Solution

The fourth proportional to 57,569.54, 86,344.89 and 40,879.08 is: 61,311.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,569.54 : 86,344.89 = 40,879.08 : x
  2. Step 2: Convert to fraction form
    57,569.54/86,344.89 = 40,879.08/x
  3. Step 3: Cross multiply
    57,569.54x = 86,344.89 × 40,879.08
  4. Step 4: Simplify right side
    57,569.54x = 3,529,699,512.60
  5. Step 5: Solve for x
    x = 3,529,699,512.60/57,569.54
  6. Step 6: Final answer
    x = 61,311.93

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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.