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Finding the Fourth Proportional to 214,625.54, 321,741.21 and 74,286.02

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Solution

The fourth proportional to 214,625.54, 321,741.21 and 74,286.02 is: 111,360.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    214,625.54 : 321,741.21 = 74,286.02 : x
  2. Step 2: Convert to fraction form
    214,625.54/321,741.21 = 74,286.02/x
  3. Step 3: Cross multiply
    214,625.54x = 321,741.21 × 74,286.02
  4. Step 4: Simplify right side
    214,625.54x = 23,900,873,960.88
  5. Step 5: Solve for x
    x = 23,900,873,960.88/214,625.54
  6. Step 6: Final answer
    x = 111,360.81

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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.