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Finding the Fourth Proportional to 111,392.44, 166,916.65 and 75,227.15

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Solution

The fourth proportional to 111,392.44, 166,916.65 and 75,227.15 is: 112,724.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,392.44 : 166,916.65 = 75,227.15 : x
  2. Step 2: Convert to fraction form
    111,392.44/166,916.65 = 75,227.15/x
  3. Step 3: Cross multiply
    111,392.44x = 166,916.65 × 75,227.15
  4. Step 4: Simplify right side
    111,392.44x = 12,556,663,867.05
  5. Step 5: Solve for x
    x = 12,556,663,867.05/111,392.44
  6. Step 6: Final answer
    x = 112,724.56

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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.