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Finding the Fourth Proportional to 20,604.72, 30,851.72 and 16,951.07

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Solution

The fourth proportional to 20,604.72, 30,851.72 and 16,951.07 is: 25,381.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,604.72 : 30,851.72 = 16,951.07 : x
  2. Step 2: Convert to fraction form
    20,604.72/30,851.72 = 16,951.07/x
  3. Step 3: Cross multiply
    20,604.72x = 30,851.72 × 16,951.07
  4. Step 4: Simplify right side
    20,604.72x = 522,969,426.33
  5. Step 5: Solve for x
    x = 522,969,426.33/20,604.72
  6. Step 6: Final answer
    x = 25,381.05

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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.