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Finding the Fourth Proportional to 319,911.62, 479,818.22 and 106,683.26

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Solution

The fourth proportional to 319,911.62, 479,818.22 and 106,683.26 is: 160,008.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,911.62 : 479,818.22 = 106,683.26 : x
  2. Step 2: Convert to fraction form
    319,911.62/479,818.22 = 106,683.26/x
  3. Step 3: Cross multiply
    319,911.62x = 479,818.22 × 106,683.26
  4. Step 4: Simplify right side
    319,911.62x = 51,188,568,984.49
  5. Step 5: Solve for x
    x = 51,188,568,984.49/319,911.62
  6. Step 6: Final answer
    x = 160,008.47

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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.