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Finding the Fourth Proportional to 9,822.40, 14,738.40 and 7,481.60

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Solution

The fourth proportional to 9,822.40, 14,738.40 and 7,481.60 is: 11,226.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,822.40 : 14,738.40 = 7,481.60 : x
  2. Step 2: Convert to fraction form
    9,822.40/14,738.40 = 7,481.60/x
  3. Step 3: Cross multiply
    9,822.40x = 14,738.40 × 7,481.60
  4. Step 4: Simplify right side
    9,822.40x = 110,266,813.44
  5. Step 5: Solve for x
    x = 110,266,813.44/9,822.40
  6. Step 6: Final answer
    x = 11,226.06

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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.