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Finding the Fourth Proportional to 15,452.74, 21,324.79 and 8,379.16

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Solution

The fourth proportional to 15,452.74, 21,324.79 and 8,379.16 is: 11,563.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,452.74 : 21,324.79 = 8,379.16 : x
  2. Step 2: Convert to fraction form
    15,452.74/21,324.79 = 8,379.16/x
  3. Step 3: Cross multiply
    15,452.74x = 21,324.79 × 8,379.16
  4. Step 4: Simplify right side
    15,452.74x = 178,683,753.12
  5. Step 5: Solve for x
    x = 178,683,753.12/15,452.74
  6. Step 6: Final answer
    x = 11,563.24

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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.