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Finding the Fourth Proportional to 66,481.22, 91,744.62 and 36,266.78

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Solution

The fourth proportional to 66,481.22, 91,744.62 and 36,266.78 is: 50,048.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,481.22 : 91,744.62 = 36,266.78 : x
  2. Step 2: Convert to fraction form
    66,481.22/91,744.62 = 36,266.78/x
  3. Step 3: Cross multiply
    66,481.22x = 91,744.62 × 36,266.78
  4. Step 4: Simplify right side
    66,481.22x = 3,327,281,949.72
  5. Step 5: Solve for x
    x = 3,327,281,949.72/66,481.22
  6. Step 6: Final answer
    x = 50,048.45

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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.