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Finding the Fourth Proportional to 18,424.26, 27,636.30 and 5,276.61

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Solution

The fourth proportional to 18,424.26, 27,636.30 and 5,276.61 is: 7,914.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,424.26 : 27,636.30 = 5,276.61 : x
  2. Step 2: Convert to fraction form
    18,424.26/27,636.30 = 5,276.61/x
  3. Step 3: Cross multiply
    18,424.26x = 27,636.30 × 5,276.61
  4. Step 4: Simplify right side
    18,424.26x = 145,825,976.94
  5. Step 5: Solve for x
    x = 145,825,976.94/18,424.26
  6. Step 6: Final answer
    x = 7,914.89

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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.