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Finding the Fourth Proportional to 18,367.31, 25,352.31 and 11,994.90

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Solution

The fourth proportional to 18,367.31, 25,352.31 and 11,994.90 is: 16,556.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,367.31 : 25,352.31 = 11,994.90 : x
  2. Step 2: Convert to fraction form
    18,367.31/25,352.31 = 11,994.90/x
  3. Step 3: Cross multiply
    18,367.31x = 25,352.31 × 11,994.90
  4. Step 4: Simplify right side
    18,367.31x = 304,098,423.22
  5. Step 5: Solve for x
    x = 304,098,423.22/18,367.31
  6. Step 6: Final answer
    x = 16,556.51

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1.5x scale

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.