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Finding the Fourth Proportional to 7,481.70, 11,244.42 and 7,394.22

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Solution

The fourth proportional to 7,481.70, 11,244.42 and 7,394.22 is: 11,112.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,481.70 : 11,244.42 = 7,394.22 : x
  2. Step 2: Convert to fraction form
    7,481.70/11,244.42 = 7,394.22/x
  3. Step 3: Cross multiply
    7,481.70x = 11,244.42 × 7,394.22
  4. Step 4: Simplify right side
    7,481.70x = 83,143,715.25
  5. Step 5: Solve for x
    x = 83,143,715.25/7,481.70
  6. Step 6: Final answer
    x = 11,112.94

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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.