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Finding the Fourth Proportional to 192,571.96, 265,786.04 and 129,020.56

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Solution

The fourth proportional to 192,571.96, 265,786.04 and 129,020.56 is: 178,072.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,571.96 : 265,786.04 = 129,020.56 : x
  2. Step 2: Convert to fraction form
    192,571.96/265,786.04 = 129,020.56/x
  3. Step 3: Cross multiply
    192,571.96x = 265,786.04 × 129,020.56
  4. Step 4: Simplify right side
    192,571.96x = 34,291,863,720.98
  5. Step 5: Solve for x
    x = 34,291,863,720.98/192,571.96
  6. Step 6: Final answer
    x = 178,072.98

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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.