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Finding the Fourth Proportional to 248,813.91, 373,219.65 and 71,321.85

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Solution

The fourth proportional to 248,813.91, 373,219.65 and 71,321.85 is: 106,982.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,813.91 : 373,219.65 = 71,321.85 : x
  2. Step 2: Convert to fraction form
    248,813.91/373,219.65 = 71,321.85/x
  3. Step 3: Cross multiply
    248,813.91x = 373,219.65 × 71,321.85
  4. Step 4: Simplify right side
    248,813.91x = 26,618,715,894.35
  5. Step 5: Solve for x
    x = 26,618,715,894.35/248,813.91
  6. Step 6: Final answer
    x = 106,982.43

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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.