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Finding the Fourth Proportional to 9,996.40, 13,794.78 and 5,519.80

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Solution

The fourth proportional to 9,996.40, 13,794.78 and 5,519.80 is: 7,617.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,996.40 : 13,794.78 = 5,519.80 : x
  2. Step 2: Convert to fraction form
    9,996.40/13,794.78 = 5,519.80/x
  3. Step 3: Cross multiply
    9,996.40x = 13,794.78 × 5,519.80
  4. Step 4: Simplify right side
    9,996.40x = 76,144,426.64
  5. Step 5: Solve for x
    x = 76,144,426.64/9,996.40
  6. Step 6: Final answer
    x = 7,617.18

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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.