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Finding the Fourth Proportional to 36,611.92, 54,919.88 and 11,653.96

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Solution

The fourth proportional to 36,611.92, 54,919.88 and 11,653.96 is: 17,481.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,611.92 : 54,919.88 = 11,653.96 : x
  2. Step 2: Convert to fraction form
    36,611.92/54,919.88 = 11,653.96/x
  3. Step 3: Cross multiply
    36,611.92x = 54,919.88 × 11,653.96
  4. Step 4: Simplify right side
    36,611.92x = 640,034,084.72
  5. Step 5: Solve for x
    x = 640,034,084.72/36,611.92
  6. Step 6: Final answer
    x = 17,481.58

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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.