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Finding the Fourth Proportional to 7,976.56, 11,004.01 and 7,336.87

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Solution

The fourth proportional to 7,976.56, 11,004.01 and 7,336.87 is: 10,121.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,976.56 : 11,004.01 = 7,336.87 : x
  2. Step 2: Convert to fraction form
    7,976.56/11,004.01 = 7,336.87/x
  3. Step 3: Cross multiply
    7,976.56x = 11,004.01 × 7,336.87
  4. Step 4: Simplify right side
    7,976.56x = 80,734,990.85
  5. Step 5: Solve for x
    x = 80,734,990.85/7,976.56
  6. Step 6: Final answer
    x = 10,121.53

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.