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Finding the Fourth Proportional to 91,213.97, 125,874.09 and 50,928.42

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Solution

The fourth proportional to 91,213.97, 125,874.09 and 50,928.42 is: 70,280.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,213.97 : 125,874.09 = 50,928.42 : x
  2. Step 2: Convert to fraction form
    91,213.97/125,874.09 = 50,928.42/x
  3. Step 3: Cross multiply
    91,213.97x = 125,874.09 × 50,928.42
  4. Step 4: Simplify right side
    91,213.97x = 6,410,568,522.64
  5. Step 5: Solve for x
    x = 6,410,568,522.64/91,213.97
  6. Step 6: Final answer
    x = 70,280.55

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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.