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Finding the Fourth Proportional to 20,616.92, 30,928.42 and 7,466.22

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Solution

The fourth proportional to 20,616.92, 30,928.42 and 7,466.22 is: 11,200.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,616.92 : 30,928.42 = 7,466.22 : x
  2. Step 2: Convert to fraction form
    20,616.92/30,928.42 = 7,466.22/x
  3. Step 3: Cross multiply
    20,616.92x = 30,928.42 × 7,466.22
  4. Step 4: Simplify right side
    20,616.92x = 230,918,387.97
  5. Step 5: Solve for x
    x = 230,918,387.97/20,616.92
  6. Step 6: Final answer
    x = 11,200.43

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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.