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Finding the Fourth Proportional to 517,247.78, 775,933.83 and 171,042.91

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Solution

The fourth proportional to 517,247.78, 775,933.83 and 171,042.91 is: 256,584.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    517,247.78 : 775,933.83 = 171,042.91 : x
  2. Step 2: Convert to fraction form
    517,247.78/775,933.83 = 171,042.91/x
  3. Step 3: Cross multiply
    517,247.78x = 775,933.83 × 171,042.91
  4. Step 4: Simplify right side
    517,247.78x = 132,717,978,310.81
  5. Step 5: Solve for x
    x = 132,717,978,310.81/517,247.78
  6. Step 6: Final answer
    x = 256,584.92

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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.