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Finding the Fourth Proportional to 114,072.92, 171,021.89 and 69,720.56

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Solution

The fourth proportional to 114,072.92, 171,021.89 and 69,720.56 is: 104,527.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    114,072.92 : 171,021.89 = 69,720.56 : x
  2. Step 2: Convert to fraction form
    114,072.92/171,021.89 = 69,720.56/x
  3. Step 3: Cross multiply
    114,072.92x = 171,021.89 × 69,720.56
  4. Step 4: Simplify right side
    114,072.92x = 11,923,741,262.25
  5. Step 5: Solve for x
    x = 11,923,741,262.25/114,072.92
  6. Step 6: Final answer
    x = 104,527.37

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.