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Finding the Fourth Proportional to 69,400.62, 104,085.36 and 31,924.71

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Solution

The fourth proportional to 69,400.62, 104,085.36 and 31,924.71 is: 47,879.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,400.62 : 104,085.36 = 31,924.71 : x
  2. Step 2: Convert to fraction form
    69,400.62/104,085.36 = 31,924.71/x
  3. Step 3: Cross multiply
    69,400.62x = 104,085.36 × 31,924.71
  4. Step 4: Simplify right side
    69,400.62x = 3,322,894,933.25
  5. Step 5: Solve for x
    x = 3,322,894,933.25/69,400.62
  6. Step 6: Final answer
    x = 47,879.90

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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.