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Finding the Fourth Proportional to 271,879.80, 407,819.70 and 114,415.80

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Solution

The fourth proportional to 271,879.80, 407,819.70 and 114,415.80 is: 171,623.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    271,879.80 : 407,819.70 = 114,415.80 : x
  2. Step 2: Convert to fraction form
    271,879.80/407,819.70 = 114,415.80/x
  3. Step 3: Cross multiply
    271,879.80x = 407,819.70 × 114,415.80
  4. Step 4: Simplify right side
    271,879.80x = 46,661,017,231.26
  5. Step 5: Solve for x
    x = 46,661,017,231.26/271,879.80
  6. Step 6: Final answer
    x = 171,623.70

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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.