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Finding the Fourth Proportional to 66,391.44, 91,619.01 and 36,176.97

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Solution

The fourth proportional to 66,391.44, 91,619.01 and 36,176.97 is: 49,923.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,391.44 : 91,619.01 = 36,176.97 : x
  2. Step 2: Convert to fraction form
    66,391.44/91,619.01 = 36,176.97/x
  3. Step 3: Cross multiply
    66,391.44x = 91,619.01 × 36,176.97
  4. Step 4: Simplify right side
    66,391.44x = 3,314,498,176.20
  5. Step 5: Solve for x
    x = 3,314,498,176.20/66,391.44
  6. Step 6: Final answer
    x = 49,923.58

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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.