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Finding the Fourth Proportional to 67,449.38, 100,974.80 and 64,562.54

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Solution

The fourth proportional to 67,449.38, 100,974.80 and 64,562.54 is: 96,653.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,449.38 : 100,974.80 = 64,562.54 : x
  2. Step 2: Convert to fraction form
    67,449.38/100,974.80 = 64,562.54/x
  3. Step 3: Cross multiply
    67,449.38x = 100,974.80 × 64,562.54
  4. Step 4: Simplify right side
    67,449.38x = 6,519,189,563.99
  5. Step 5: Solve for x
    x = 6,519,189,563.99/67,449.38
  6. Step 6: Final answer
    x = 96,653.07

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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.