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Finding the Fourth Proportional to 20,609.92, 30,923.52 and 6,760.32

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Solution

The fourth proportional to 20,609.92, 30,923.52 and 6,760.32 is: 10,143.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,609.92 : 30,923.52 = 6,760.32 : x
  2. Step 2: Convert to fraction form
    20,609.92/30,923.52 = 6,760.32/x
  3. Step 3: Cross multiply
    20,609.92x = 30,923.52 × 6,760.32
  4. Step 4: Simplify right side
    20,609.92x = 209,052,890.73
  5. Step 5: Solve for x
    x = 209,052,890.73/20,609.92
  6. Step 6: Final answer
    x = 10,143.31

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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.