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Finding the Fourth Proportional to 20,616.16, 30,926.67 and 6,571.30

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Solution

The fourth proportional to 20,616.16, 30,926.67 and 6,571.30 is: 9,857.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,616.16 : 30,926.67 = 6,571.30 : x
  2. Step 2: Convert to fraction form
    20,616.16/30,926.67 = 6,571.30/x
  3. Step 3: Cross multiply
    20,616.16x = 30,926.67 × 6,571.30
  4. Step 4: Simplify right side
    20,616.16x = 203,228,426.57
  5. Step 5: Solve for x
    x = 203,228,426.57/20,616.16
  6. Step 6: Final answer
    x = 9,857.72

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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.