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Finding the Fourth Proportional to 414,551.55, 621,757.77 and 115,062.56

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Solution

The fourth proportional to 414,551.55, 621,757.77 and 115,062.56 is: 172,574.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    414,551.55 : 621,757.77 = 115,062.56 : x
  2. Step 2: Convert to fraction form
    414,551.55/621,757.77 = 115,062.56/x
  3. Step 3: Cross multiply
    414,551.55x = 621,757.77 × 115,062.56
  4. Step 4: Simplify right side
    414,551.55x = 71,541,040,716.09
  5. Step 5: Solve for x
    x = 71,541,040,716.09/414,551.55
  6. Step 6: Final answer
    x = 172,574.53

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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.