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Finding the Fourth Proportional to 16,481.65, 24,719.94 and 5,388.40

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Solution

The fourth proportional to 16,481.65, 24,719.94 and 5,388.40 is: 8,081.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,481.65 : 24,719.94 = 5,388.40 : x
  2. Step 2: Convert to fraction form
    16,481.65/24,719.94 = 5,388.40/x
  3. Step 3: Cross multiply
    16,481.65x = 24,719.94 × 5,388.40
  4. Step 4: Simplify right side
    16,481.65x = 133,200,924.70
  5. Step 5: Solve for x
    x = 133,200,924.70/16,481.65
  6. Step 6: Final answer
    x = 8,081.77

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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.