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Finding the Fourth Proportional to 11,481.10, 17,221.65 and 3,690.70

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Solution

The fourth proportional to 11,481.10, 17,221.65 and 3,690.70 is: 5,536.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,481.10 : 17,221.65 = 3,690.70 : x
  2. Step 2: Convert to fraction form
    11,481.10/17,221.65 = 3,690.70/x
  3. Step 3: Cross multiply
    11,481.10x = 17,221.65 × 3,690.70
  4. Step 4: Simplify right side
    11,481.10x = 63,559,943.66
  5. Step 5: Solve for x
    x = 63,559,943.66/11,481.10
  6. Step 6: Final answer
    x = 5,536.05

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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.