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Finding the Fourth Proportional to 8,168.49, 11,271.60 and 4,811.09

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Solution

The fourth proportional to 8,168.49, 11,271.60 and 4,811.09 is: 6,638.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,168.49 : 11,271.60 = 4,811.09 : x
  2. Step 2: Convert to fraction form
    8,168.49/11,271.60 = 4,811.09/x
  3. Step 3: Cross multiply
    8,168.49x = 11,271.60 × 4,811.09
  4. Step 4: Simplify right side
    8,168.49x = 54,228,625.69
  5. Step 5: Solve for x
    x = 54,228,625.69/8,168.49
  6. Step 6: Final answer
    x = 6,638.76

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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.