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Finding the Fourth Proportional to 7,906.55, 10,920.24 and 5,249.35

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Solution

The fourth proportional to 7,906.55, 10,920.24 and 5,249.35 is: 7,250.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,906.55 : 10,920.24 = 5,249.35 : x
  2. Step 2: Convert to fraction form
    7,906.55/10,920.24 = 5,249.35/x
  3. Step 3: Cross multiply
    7,906.55x = 10,920.24 × 5,249.35
  4. Step 4: Simplify right side
    7,906.55x = 57,324,134.54
  5. Step 5: Solve for x
    x = 57,324,134.54/7,906.55
  6. Step 6: Final answer
    x = 7,250.21

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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.