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Finding the Fourth Proportional to 5,918.46, 8,879.76 and 3,951.96

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Solution

The fourth proportional to 5,918.46, 8,879.76 and 3,951.96 is: 5,929.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,918.46 : 8,879.76 = 3,951.96 : x
  2. Step 2: Convert to fraction form
    5,918.46/8,879.76 = 3,951.96/x
  3. Step 3: Cross multiply
    5,918.46x = 8,879.76 × 3,951.96
  4. Step 4: Simplify right side
    5,918.46x = 35,092,456.33
  5. Step 5: Solve for x
    x = 35,092,456.33/5,918.46
  6. Step 6: Final answer
    x = 5,929.32

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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.