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Finding the Fourth Proportional to 79,226.56, 109,329.52 and 47,376.48

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Solution

The fourth proportional to 79,226.56, 109,329.52 and 47,376.48 is: 65,377.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,226.56 : 109,329.52 = 47,376.48 : x
  2. Step 2: Convert to fraction form
    79,226.56/109,329.52 = 47,376.48/x
  3. Step 3: Cross multiply
    79,226.56x = 109,329.52 × 47,376.48
  4. Step 4: Simplify right side
    79,226.56x = 5,179,647,817.69
  5. Step 5: Solve for x
    x = 5,179,647,817.69/79,226.56
  6. Step 6: Final answer
    x = 65,377.67

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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.