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Finding the Fourth Proportional to 90,879.44, 125,410.79 and 50,592.31

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Solution

The fourth proportional to 90,879.44, 125,410.79 and 50,592.31 is: 69,815.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,879.44 : 125,410.79 = 50,592.31 : x
  2. Step 2: Convert to fraction form
    90,879.44/125,410.79 = 50,592.31/x
  3. Step 3: Cross multiply
    90,879.44x = 125,410.79 × 50,592.31
  4. Step 4: Simplify right side
    90,879.44x = 6,344,821,377.98
  5. Step 5: Solve for x
    x = 6,344,821,377.98/90,879.44
  6. Step 6: Final answer
    x = 69,815.81

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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.