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Finding the Fourth Proportional to 12,115.48, 18,172.98 and 3,795.52

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Solution

The fourth proportional to 12,115.48, 18,172.98 and 3,795.52 is: 5,693.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,115.48 : 18,172.98 = 3,795.52 : x
  2. Step 2: Convert to fraction form
    12,115.48/18,172.98 = 3,795.52/x
  3. Step 3: Cross multiply
    12,115.48x = 18,172.98 × 3,795.52
  4. Step 4: Simplify right side
    12,115.48x = 68,975,909.05
  5. Step 5: Solve for x
    x = 68,975,909.05/12,115.48
  6. Step 6: Final answer
    x = 5,693.20

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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.