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Finding the Fourth Proportional to 66,286.44, 91,473.81 and 36,071.85

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Solution

The fourth proportional to 66,286.44, 91,473.81 and 36,071.85 is: 49,778.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,286.44 : 91,473.81 = 36,071.85 : x
  2. Step 2: Convert to fraction form
    66,286.44/91,473.81 = 36,071.85/x
  3. Step 3: Cross multiply
    66,286.44x = 91,473.81 × 36,071.85
  4. Step 4: Simplify right side
    66,286.44x = 3,299,629,553.25
  5. Step 5: Solve for x
    x = 3,299,629,553.25/66,286.44
  6. Step 6: Final answer
    x = 49,778.35

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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.