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Finding the Fourth Proportional to 18,467.40, 25,497.20 and 11,404.20

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Solution

The fourth proportional to 18,467.40, 25,497.20 and 11,404.20 is: 15,745.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,467.40 : 25,497.20 = 11,404.20 : x
  2. Step 2: Convert to fraction form
    18,467.40/25,497.20 = 11,404.20/x
  3. Step 3: Cross multiply
    18,467.40x = 25,497.20 × 11,404.20
  4. Step 4: Simplify right side
    18,467.40x = 290,775,168.24
  5. Step 5: Solve for x
    x = 290,775,168.24/18,467.40
  6. Step 6: Final answer
    x = 15,745.32

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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.