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Finding the Fourth Proportional to 13,324.23, 18,387.91 and 7,356.12

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Solution

The fourth proportional to 13,324.23, 18,387.91 and 7,356.12 is: 10,151.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,324.23 : 18,387.91 = 7,356.12 : x
  2. Step 2: Convert to fraction form
    13,324.23/18,387.91 = 7,356.12/x
  3. Step 3: Cross multiply
    13,324.23x = 18,387.91 × 7,356.12
  4. Step 4: Simplify right side
    13,324.23x = 135,263,672.51
  5. Step 5: Solve for x
    x = 135,263,672.51/13,324.23
  6. Step 6: Final answer
    x = 10,151.71

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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.