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Finding the Fourth Proportional to 18,373.31, 25,352.34 and 10,819.95

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Solution

The fourth proportional to 18,373.31, 25,352.34 and 10,819.95 is: 14,929.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,373.31 : 25,352.34 = 10,819.95 : x
  2. Step 2: Convert to fraction form
    18,373.31/25,352.34 = 10,819.95/x
  3. Step 3: Cross multiply
    18,373.31x = 25,352.34 × 10,819.95
  4. Step 4: Simplify right side
    18,373.31x = 274,311,190.31
  5. Step 5: Solve for x
    x = 274,311,190.31/18,373.31
  6. Step 6: Final answer
    x = 14,929.88

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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.