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Finding the Fourth Proportional to 29,048.91, 43,568.79 and 7,990.53

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Solution

The fourth proportional to 29,048.91, 43,568.79 and 7,990.53 is: 11,984.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,048.91 : 43,568.79 = 7,990.53 : x
  2. Step 2: Convert to fraction form
    29,048.91/43,568.79 = 7,990.53/x
  3. Step 3: Cross multiply
    29,048.91x = 43,568.79 × 7,990.53
  4. Step 4: Simplify right side
    29,048.91x = 348,137,723.56
  5. Step 5: Solve for x
    x = 348,137,723.56/29,048.91
  6. Step 6: Final answer
    x = 11,984.54

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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.