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Finding the Fourth Proportional to 66,640.96, 91,952.96 and 41,161.60

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Solution

The fourth proportional to 66,640.96, 91,952.96 and 41,161.60 is: 56,795.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,640.96 : 91,952.96 = 41,161.60 : x
  2. Step 2: Convert to fraction form
    66,640.96/91,952.96 = 41,161.60/x
  3. Step 3: Cross multiply
    66,640.96x = 91,952.96 × 41,161.60
  4. Step 4: Simplify right side
    66,640.96x = 3,784,930,958.34
  5. Step 5: Solve for x
    x = 3,784,930,958.34/66,640.96
  6. Step 6: Final answer
    x = 56,795.86

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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.