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Finding the Fourth Proportional to 259,399.70, 389,174.73 and 107,568.57

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Solution

The fourth proportional to 259,399.70, 389,174.73 and 107,568.57 is: 161,384.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,399.70 : 389,174.73 = 107,568.57 : x
  2. Step 2: Convert to fraction form
    259,399.70/389,174.73 = 107,568.57/x
  3. Step 3: Cross multiply
    259,399.70x = 389,174.73 × 107,568.57
  4. Step 4: Simplify right side
    259,399.70x = 41,862,969,186.24
  5. Step 5: Solve for x
    x = 41,862,969,186.24/259,399.70
  6. Step 6: Final answer
    x = 161,384.03

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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.