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Finding the Fourth Proportional to 12,166.96, 18,239.88 and 5,918.26

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Solution

The fourth proportional to 12,166.96, 18,239.88 and 5,918.26 is: 8,872.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,166.96 : 18,239.88 = 5,918.26 : x
  2. Step 2: Convert to fraction form
    12,166.96/18,239.88 = 5,918.26/x
  3. Step 3: Cross multiply
    12,166.96x = 18,239.88 × 5,918.26
  4. Step 4: Simplify right side
    12,166.96x = 107,948,352.21
  5. Step 5: Solve for x
    x = 107,948,352.21/12,166.96
  6. Step 6: Final answer
    x = 8,872.25

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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.