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Finding the Fourth Proportional to 7,390.44, 11,020.32 and 7,324.56

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Solution

The fourth proportional to 7,390.44, 11,020.32 and 7,324.56 is: 10,922.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,390.44 : 11,020.32 = 7,324.56 : x
  2. Step 2: Convert to fraction form
    7,390.44/11,020.32 = 7,324.56/x
  3. Step 3: Cross multiply
    7,390.44x = 11,020.32 × 7,324.56
  4. Step 4: Simplify right side
    7,390.44x = 80,718,995.06
  5. Step 5: Solve for x
    x = 80,718,995.06/7,390.44
  6. Step 6: Final answer
    x = 10,922.08

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.