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Finding the Fourth Proportional to 8,772.38, 12,105.84 and 4,793.72

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Solution

The fourth proportional to 8,772.38, 12,105.84 and 4,793.72 is: 6,615.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,772.38 : 12,105.84 = 4,793.72 : x
  2. Step 2: Convert to fraction form
    8,772.38/12,105.84 = 4,793.72/x
  3. Step 3: Cross multiply
    8,772.38x = 12,105.84 × 4,793.72
  4. Step 4: Simplify right side
    8,772.38x = 58,032,007.32
  5. Step 5: Solve for x
    x = 58,032,007.32/8,772.38
  6. Step 6: Final answer
    x = 6,615.31

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.