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Finding the Fourth Proportional to 18,467.61, 25,487.15 and 11,015.61

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Solution

The fourth proportional to 18,467.61, 25,487.15 and 11,015.61 is: 15,202.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,467.61 : 25,487.15 = 11,015.61 : x
  2. Step 2: Convert to fraction form
    18,467.61/25,487.15 = 11,015.61/x
  3. Step 3: Cross multiply
    18,467.61x = 25,487.15 × 11,015.61
  4. Step 4: Simplify right side
    18,467.61x = 280,756,449.33
  5. Step 5: Solve for x
    x = 280,756,449.33/18,467.61
  6. Step 6: Final answer
    x = 15,202.64

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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.