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Finding the Fourth Proportional to 57,054.70, 78,731.49 and 33,179.68

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Solution

The fourth proportional to 57,054.70, 78,731.49 and 33,179.68 is: 45,785.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,054.70 : 78,731.49 = 33,179.68 : x
  2. Step 2: Convert to fraction form
    57,054.70/78,731.49 = 33,179.68/x
  3. Step 3: Cross multiply
    57,054.70x = 78,731.49 × 33,179.68
  4. Step 4: Simplify right side
    57,054.70x = 2,612,285,644.12
  5. Step 5: Solve for x
    x = 2,612,285,644.12/57,054.70
  6. Step 6: Final answer
    x = 45,785.63

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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.