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Finding the Fourth Proportional to 7,420.56, 11,130.84 and 2,226.44

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Solution

The fourth proportional to 7,420.56, 11,130.84 and 2,226.44 is: 3,339.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,420.56 : 11,130.84 = 2,226.44 : x
  2. Step 2: Convert to fraction form
    7,420.56/11,130.84 = 2,226.44/x
  3. Step 3: Cross multiply
    7,420.56x = 11,130.84 × 2,226.44
  4. Step 4: Simplify right side
    7,420.56x = 24,782,147.41
  5. Step 5: Solve for x
    x = 24,782,147.41/7,420.56
  6. Step 6: Final answer
    x = 3,339.66

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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.