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Finding the Fourth Proportional to 18,362.16, 25,340.04 and 11,286

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Solution

The fourth proportional to 18,362.16, 25,340.04 and 11,286 is: 15,574.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,362.16 : 25,340.04 = 11,286 : x
  2. Step 2: Convert to fraction form
    18,362.16/25,340.04 = 11,286/x
  3. Step 3: Cross multiply
    18,362.16x = 25,340.04 × 11,286
  4. Step 4: Simplify right side
    18,362.16x = 285,987,691.44
  5. Step 5: Solve for x
    x = 285,987,691.44/18,362.16
  6. Step 6: Final answer
    x = 15,574.84

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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.