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Finding the Fourth Proportional to 111,821.73, 154,233.36 and 64,057.65

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Solution

The fourth proportional to 111,821.73, 154,233.36 and 64,057.65 is: 88,353.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,821.73 : 154,233.36 = 64,057.65 : x
  2. Step 2: Convert to fraction form
    111,821.73/154,233.36 = 64,057.65/x
  3. Step 3: Cross multiply
    111,821.73x = 154,233.36 × 64,057.65
  4. Step 4: Simplify right side
    111,821.73x = 9,879,826,593.20
  5. Step 5: Solve for x
    x = 9,879,826,593.20/111,821.73
  6. Step 6: Final answer
    x = 88,353.37

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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.