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Finding the Fourth Proportional to 319,791.02, 479,679.94 and 106,574.41

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Solution

The fourth proportional to 319,791.02, 479,679.94 and 106,574.41 is: 159,859.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,791.02 : 479,679.94 = 106,574.41 : x
  2. Step 2: Convert to fraction form
    319,791.02/479,679.94 = 106,574.41/x
  3. Step 3: Cross multiply
    319,791.02x = 479,679.94 × 106,574.41
  4. Step 4: Simplify right side
    319,791.02x = 51,121,605,128.70
  5. Step 5: Solve for x
    x = 51,121,605,128.70/319,791.02
  6. Step 6: Final answer
    x = 159,859.42

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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.