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Finding the Fourth Proportional to 2,334.51, 3,221.37 and 1,286.37

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Solution

The fourth proportional to 2,334.51, 3,221.37 and 1,286.37 is: 1,775.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,334.51 : 3,221.37 = 1,286.37 : x
  2. Step 2: Convert to fraction form
    2,334.51/3,221.37 = 1,286.37/x
  3. Step 3: Cross multiply
    2,334.51x = 3,221.37 × 1,286.37
  4. Step 4: Simplify right side
    2,334.51x = 4,143,873.73
  5. Step 5: Solve for x
    x = 4,143,873.73/2,334.51
  6. Step 6: Final answer
    x = 1,775.05

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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.