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Finding the Fourth Proportional to 8,351.48, 11,519.98 and 5,518.88

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Solution

The fourth proportional to 8,351.48, 11,519.98 and 5,518.88 is: 7,612.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,351.48 : 11,519.98 = 5,518.88 : x
  2. Step 2: Convert to fraction form
    8,351.48/11,519.98 = 5,518.88/x
  3. Step 3: Cross multiply
    8,351.48x = 11,519.98 × 5,518.88
  4. Step 4: Simplify right side
    8,351.48x = 63,577,387.22
  5. Step 5: Solve for x
    x = 63,577,387.22/8,351.48
  6. Step 6: Final answer
    x = 7,612.71

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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.