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Finding the Fourth Proportional to 45,396.62, 68,105.88 and 14,231.88

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Solution

The fourth proportional to 45,396.62, 68,105.88 and 14,231.88 is: 21,351.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,396.62 : 68,105.88 = 14,231.88 : x
  2. Step 2: Convert to fraction form
    45,396.62/68,105.88 = 14,231.88/x
  3. Step 3: Cross multiply
    45,396.62x = 68,105.88 × 14,231.88
  4. Step 4: Simplify right side
    45,396.62x = 969,274,711.45
  5. Step 5: Solve for x
    x = 969,274,711.45/45,396.62
  6. Step 6: Final answer
    x = 21,351.25

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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.