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Finding the Fourth Proportional to 69,919.50, 96,481.72 and 39,287.73

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Solution

The fourth proportional to 69,919.50, 96,481.72 and 39,287.73 is: 54,213.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,919.50 : 96,481.72 = 39,287.73 : x
  2. Step 2: Convert to fraction form
    69,919.50/96,481.72 = 39,287.73/x
  3. Step 3: Cross multiply
    69,919.50x = 96,481.72 × 39,287.73
  4. Step 4: Simplify right side
    69,919.50x = 3,790,547,765.30
  5. Step 5: Solve for x
    x = 3,790,547,765.30/69,919.50
  6. Step 6: Final answer
    x = 54,213.03

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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.