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Finding the Fourth Proportional to 13,818.69, 19,072.74 and 8,151.33

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Solution

The fourth proportional to 13,818.69, 19,072.74 and 8,151.33 is: 11,250.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,818.69 : 19,072.74 = 8,151.33 : x
  2. Step 2: Convert to fraction form
    13,818.69/19,072.74 = 8,151.33/x
  3. Step 3: Cross multiply
    13,818.69x = 19,072.74 × 8,151.33
  4. Step 4: Simplify right side
    13,818.69x = 155,468,197.74
  5. Step 5: Solve for x
    x = 155,468,197.74/13,818.69
  6. Step 6: Final answer
    x = 11,250.57

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.