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Finding the Fourth Proportional to 9,392.85, 12,961.32 and 5,414.27

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Solution

The fourth proportional to 9,392.85, 12,961.32 and 5,414.27 is: 7,471.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,392.85 : 12,961.32 = 5,414.27 : x
  2. Step 2: Convert to fraction form
    9,392.85/12,961.32 = 5,414.27/x
  3. Step 3: Cross multiply
    9,392.85x = 12,961.32 × 5,414.27
  4. Step 4: Simplify right side
    9,392.85x = 70,176,021.23
  5. Step 5: Solve for x
    x = 70,176,021.23/9,392.85
  6. Step 6: Final answer
    x = 7,471.22

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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.