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Finding the Fourth Proportional to 45,505.54, 68,253.69 and 12,221.28

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Solution

The fourth proportional to 45,505.54, 68,253.69 and 12,221.28 is: 18,330.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,505.54 : 68,253.69 = 12,221.28 : x
  2. Step 2: Convert to fraction form
    45,505.54/68,253.69 = 12,221.28/x
  3. Step 3: Cross multiply
    45,505.54x = 68,253.69 × 12,221.28
  4. Step 4: Simplify right side
    45,505.54x = 834,147,115.25
  5. Step 5: Solve for x
    x = 834,147,115.25/45,505.54
  6. Step 6: Final answer
    x = 18,330.67

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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.