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Finding the Fourth Proportional to 79,086.24, 109,123.20 and 47,269.44

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Solution

The fourth proportional to 79,086.24, 109,123.20 and 47,269.44 is: 65,222.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,086.24 : 109,123.20 = 47,269.44 : x
  2. Step 2: Convert to fraction form
    79,086.24/109,123.20 = 47,269.44/x
  3. Step 3: Cross multiply
    79,086.24x = 109,123.20 × 47,269.44
  4. Step 4: Simplify right side
    79,086.24x = 5,158,192,555.01
  5. Step 5: Solve for x
    x = 5,158,192,555.01/79,086.24
  6. Step 6: Final answer
    x = 65,222.38

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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.