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Finding the Fourth Proportional to 18,483.62, 27,744.12 and 16,388.66

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Solution

The fourth proportional to 18,483.62, 27,744.12 and 16,388.66 is: 24,599.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,483.62 : 27,744.12 = 16,388.66 : x
  2. Step 2: Convert to fraction form
    18,483.62/27,744.12 = 16,388.66/x
  3. Step 3: Cross multiply
    18,483.62x = 27,744.12 × 16,388.66
  4. Step 4: Simplify right side
    18,483.62x = 454,688,949.68
  5. Step 5: Solve for x
    x = 454,688,949.68/18,483.62
  6. Step 6: Final answer
    x = 24,599.56

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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.