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Finding the Fourth Proportional to 7,672.08, 10,587.91 and 5,115.43

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Solution

The fourth proportional to 7,672.08, 10,587.91 and 5,115.43 is: 7,059.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,672.08 : 10,587.91 = 5,115.43 : x
  2. Step 2: Convert to fraction form
    7,672.08/10,587.91 = 5,115.43/x
  3. Step 3: Cross multiply
    7,672.08x = 10,587.91 × 5,115.43
  4. Step 4: Simplify right side
    7,672.08x = 54,161,736.88
  5. Step 5: Solve for x
    x = 54,161,736.88/7,672.08
  6. Step 6: Final answer
    x = 7,059.59

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