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Finding the Fourth Proportional to 16,811.20, 25,168.20 and 15,061.60

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Solution

The fourth proportional to 16,811.20, 25,168.20 and 15,061.60 is: 22,548.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,811.20 : 25,168.20 = 15,061.60 : x
  2. Step 2: Convert to fraction form
    16,811.20/25,168.20 = 15,061.60/x
  3. Step 3: Cross multiply
    16,811.20x = 25,168.20 × 15,061.60
  4. Step 4: Simplify right side
    16,811.20x = 379,073,361.12
  5. Step 5: Solve for x
    x = 379,073,361.12/16,811.20
  6. Step 6: Final answer
    x = 22,548.86

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.