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Finding the Fourth Proportional to 11,751.52, 17,583.36 and 11,620.32

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Solution

The fourth proportional to 11,751.52, 17,583.36 and 11,620.32 is: 17,387.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,751.52 : 17,583.36 = 11,620.32 : x
  2. Step 2: Convert to fraction form
    11,751.52/17,583.36 = 11,620.32/x
  3. Step 3: Cross multiply
    11,751.52x = 17,583.36 × 11,620.32
  4. Step 4: Simplify right side
    11,751.52x = 204,324,269.88
  5. Step 5: Solve for x
    x = 204,324,269.88/11,751.52
  6. Step 6: Final answer
    x = 17,387.05

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Why These Related Problems?

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