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Finding the Fourth Proportional to 259,568.56, 389,365.60 and 126,562.51

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Solution

The fourth proportional to 259,568.56, 389,365.60 and 126,562.51 is: 189,849.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,568.56 : 389,365.60 = 126,562.51 : x
  2. Step 2: Convert to fraction form
    259,568.56/389,365.60 = 126,562.51/x
  3. Step 3: Cross multiply
    259,568.56x = 389,365.60 × 126,562.51
  4. Step 4: Simplify right side
    259,568.56x = 49,279,087,643.66
  5. Step 5: Solve for x
    x = 49,279,087,643.66/259,568.56
  6. Step 6: Final answer
    x = 189,849.99

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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.