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Finding the Fourth Proportional to 7,299.81, 10,933.27 and 5,118.28

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Solution

The fourth proportional to 7,299.81, 10,933.27 and 5,118.28 is: 7,665.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,299.81 : 10,933.27 = 5,118.28 : x
  2. Step 2: Convert to fraction form
    7,299.81/10,933.27 = 5,118.28/x
  3. Step 3: Cross multiply
    7,299.81x = 10,933.27 × 5,118.28
  4. Step 4: Simplify right side
    7,299.81x = 55,959,497.05
  5. Step 5: Solve for x
    x = 55,959,497.05/7,299.81
  6. Step 6: Final answer
    x = 7,665.88

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.