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Finding the Fourth Proportional to 18,372.84, 25,354.62 and 10,819.50

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Solution

The fourth proportional to 18,372.84, 25,354.62 and 10,819.50 is: 14,930.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,372.84 : 25,354.62 = 10,819.50 : x
  2. Step 2: Convert to fraction form
    18,372.84/25,354.62 = 10,819.50/x
  3. Step 3: Cross multiply
    18,372.84x = 25,354.62 × 10,819.50
  4. Step 4: Simplify right side
    18,372.84x = 274,324,311.09
  5. Step 5: Solve for x
    x = 274,324,311.09/18,372.84
  6. Step 6: Final answer
    x = 14,930.97

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.