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Finding the Fourth Proportional to 66,016.44, 91,105.02 and 47,198.52

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Solution

The fourth proportional to 66,016.44, 91,105.02 and 47,198.52 is: 65,135.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,016.44 : 91,105.02 = 47,198.52 : x
  2. Step 2: Convert to fraction form
    66,016.44/91,105.02 = 47,198.52/x
  3. Step 3: Cross multiply
    66,016.44x = 91,105.02 × 47,198.52
  4. Step 4: Simplify right side
    66,016.44x = 4,300,022,108.57
  5. Step 5: Solve for x
    x = 4,300,022,108.57/66,016.44
  6. Step 6: Final answer
    x = 65,135.63

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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.