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Finding the Fourth Proportional to 40,978.92, 56,540.83 and 25,057.56

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Solution

The fourth proportional to 40,978.92, 56,540.83 and 25,057.56 is: 34,573.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,978.92 : 56,540.83 = 25,057.56 : x
  2. Step 2: Convert to fraction form
    40,978.92/56,540.83 = 25,057.56/x
  3. Step 3: Cross multiply
    40,978.92x = 56,540.83 × 25,057.56
  4. Step 4: Simplify right side
    40,978.92x = 1,416,775,240.17
  5. Step 5: Solve for x
    x = 1,416,775,240.17/40,978.92
  6. Step 6: Final answer
    x = 34,573.27

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.