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Finding the Fourth Proportional to 18,238.58, 27,344.20 and 7,720.93

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Solution

The fourth proportional to 18,238.58, 27,344.20 and 7,720.93 is: 11,575.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,238.58 : 27,344.20 = 7,720.93 : x
  2. Step 2: Convert to fraction form
    18,238.58/27,344.20 = 7,720.93/x
  3. Step 3: Cross multiply
    18,238.58x = 27,344.20 × 7,720.93
  4. Step 4: Simplify right side
    18,238.58x = 211,122,654.11
  5. Step 5: Solve for x
    x = 211,122,654.11/18,238.58
  6. Step 6: Final answer
    x = 11,575.61

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.