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Finding the Fourth Proportional to 171,174.80, 256,822.99 and 76,396.37

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Solution

The fourth proportional to 171,174.80, 256,822.99 and 76,396.37 is: 114,621.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,174.80 : 256,822.99 = 76,396.37 : x
  2. Step 2: Convert to fraction form
    171,174.80/256,822.99 = 76,396.37/x
  3. Step 3: Cross multiply
    171,174.80x = 256,822.99 × 76,396.37
  4. Step 4: Simplify right side
    171,174.80x = 19,620,342,693.44
  5. Step 5: Solve for x
    x = 19,620,342,693.44/171,174.80
  6. Step 6: Final answer
    x = 114,621.68

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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.