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Finding the Fourth Proportional to 68,796.64, 103,183.88 and 18,865.14

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Solution

The fourth proportional to 68,796.64, 103,183.88 and 18,865.14 is: 28,294.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,796.64 : 103,183.88 = 18,865.14 : x
  2. Step 2: Convert to fraction form
    68,796.64/103,183.88 = 18,865.14/x
  3. Step 3: Cross multiply
    68,796.64x = 103,183.88 × 18,865.14
  4. Step 4: Simplify right side
    68,796.64x = 1,946,578,247.62
  5. Step 5: Solve for x
    x = 1,946,578,247.62/68,796.64
  6. Step 6: Final answer
    x = 28,294.67

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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.