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Finding the Fourth Proportional to 12,168.60, 18,261.06 and 4,772.10

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Solution

The fourth proportional to 12,168.60, 18,261.06 and 4,772.10 is: 7,161.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,168.60 : 18,261.06 = 4,772.10 : x
  2. Step 2: Convert to fraction form
    12,168.60/18,261.06 = 4,772.10/x
  3. Step 3: Cross multiply
    12,168.60x = 18,261.06 × 4,772.10
  4. Step 4: Simplify right side
    12,168.60x = 87,143,604.43
  5. Step 5: Solve for x
    x = 87,143,604.43/12,168.60
  6. Step 6: Final answer
    x = 7,161.35

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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.