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Finding the Fourth Proportional to 393,714.06, 590,665.14 and 127,474.85

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Solution

The fourth proportional to 393,714.06, 590,665.14 and 127,474.85 is: 191,242.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,714.06 : 590,665.14 = 127,474.85 : x
  2. Step 2: Convert to fraction form
    393,714.06/590,665.14 = 127,474.85/x
  3. Step 3: Cross multiply
    393,714.06x = 590,665.14 × 127,474.85
  4. Step 4: Simplify right side
    393,714.06x = 75,294,950,121.73
  5. Step 5: Solve for x
    x = 75,294,950,121.73/393,714.06
  6. Step 6: Final answer
    x = 191,242.73

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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.