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Finding the Fourth Proportional to 57,392.56, 79,211.13 and 47,817.26

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Solution

The fourth proportional to 57,392.56, 79,211.13 and 47,817.26 is: 65,995.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,392.56 : 79,211.13 = 47,817.26 : x
  2. Step 2: Convert to fraction form
    57,392.56/79,211.13 = 47,817.26/x
  3. Step 3: Cross multiply
    57,392.56x = 79,211.13 × 47,817.26
  4. Step 4: Simplify right side
    57,392.56x = 3,787,659,198.10
  5. Step 5: Solve for x
    x = 3,787,659,198.10/57,392.56
  6. Step 6: Final answer
    x = 65,995.65

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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.