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Finding the Fourth Proportional to 8,651.44, 11,939.00 and 4,672.55

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Solution

The fourth proportional to 8,651.44, 11,939.00 and 4,672.55 is: 6,448.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,651.44 : 11,939.00 = 4,672.55 : x
  2. Step 2: Convert to fraction form
    8,651.44/11,939.00 = 4,672.55/x
  3. Step 3: Cross multiply
    8,651.44x = 11,939.00 × 4,672.55
  4. Step 4: Simplify right side
    8,651.44x = 55,785,580.93
  5. Step 5: Solve for x
    x = 55,785,580.93/8,651.44
  6. Step 6: Final answer
    x = 6,448.13

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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.