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Finding the Fourth Proportional to 79,586.85, 109,772.31 and 50,505.22

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Solution

The fourth proportional to 79,586.85, 109,772.31 and 50,505.22 is: 69,660.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,586.85 : 109,772.31 = 50,505.22 : x
  2. Step 2: Convert to fraction form
    79,586.85/109,772.31 = 50,505.22/x
  3. Step 3: Cross multiply
    79,586.85x = 109,772.31 × 50,505.22
  4. Step 4: Simplify right side
    79,586.85x = 5,544,074,993.07
  5. Step 5: Solve for x
    x = 5,544,074,993.07/79,586.85
  6. Step 6: Final answer
    x = 69,660.69

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Why These Related Problems?

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