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Finding the Fourth Proportional to 96,879, 145,367.94 and 39,994.92

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Solution

The fourth proportional to 96,879, 145,367.94 and 39,994.92 is: 60,012.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    96,879 : 145,367.94 = 39,994.92 : x
  2. Step 2: Convert to fraction form
    96,879/145,367.94 = 39,994.92/x
  3. Step 3: Cross multiply
    96,879x = 145,367.94 × 39,994.92
  4. Step 4: Simplify right side
    96,879x = 5,813,979,130.86
  5. Step 5: Solve for x
    x = 5,813,979,130.86/96,879
  6. Step 6: Final answer
    x = 60,012.79

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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.