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Finding the Fourth Proportional to 99,217.44, 136,921.56 and 53,896.32

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Solution

The fourth proportional to 99,217.44, 136,921.56 and 53,896.32 is: 74,377.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,217.44 : 136,921.56 = 53,896.32 : x
  2. Step 2: Convert to fraction form
    99,217.44/136,921.56 = 53,896.32/x
  3. Step 3: Cross multiply
    99,217.44x = 136,921.56 × 53,896.32
  4. Step 4: Simplify right side
    99,217.44x = 7,379,568,212.66
  5. Step 5: Solve for x
    x = 7,379,568,212.66/99,217.44
  6. Step 6: Final answer
    x = 74,377.73

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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.