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Finding the Fourth Proportional to 66,786.36, 92,163.53 and 36,572.96

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Solution

The fourth proportional to 66,786.36, 92,163.53 and 36,572.96 is: 50,469.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,786.36 : 92,163.53 = 36,572.96 : x
  2. Step 2: Convert to fraction form
    66,786.36/92,163.53 = 36,572.96/x
  3. Step 3: Cross multiply
    66,786.36x = 92,163.53 × 36,572.96
  4. Step 4: Simplify right side
    66,786.36x = 3,370,693,096.15
  5. Step 5: Solve for x
    x = 3,370,693,096.15/66,786.36
  6. Step 6: Final answer
    x = 50,469.78

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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.