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Finding the Fourth Proportional to 111,391.44, 166,915.15 and 75,226.15

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Solution

The fourth proportional to 111,391.44, 166,915.15 and 75,226.15 is: 112,723.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,391.44 : 166,915.15 = 75,226.15 : x
  2. Step 2: Convert to fraction form
    111,391.44/166,915.15 = 75,226.15/x
  3. Step 3: Cross multiply
    111,391.44x = 166,915.15 × 75,226.15
  4. Step 4: Simplify right side
    111,391.44x = 12,556,384,131.75
  5. Step 5: Solve for x
    x = 12,556,384,131.75/111,391.44
  6. Step 6: Final answer
    x = 112,723.07

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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.