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Finding the Fourth Proportional to 57,391.56, 79,209.75 and 47,816.26

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Solution

The fourth proportional to 57,391.56, 79,209.75 and 47,816.26 is: 65,994.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,391.56 : 79,209.75 = 47,816.26 : x
  2. Step 2: Convert to fraction form
    57,391.56/79,209.75 = 47,816.26/x
  3. Step 3: Cross multiply
    57,391.56x = 79,209.75 × 47,816.26
  4. Step 4: Simplify right side
    57,391.56x = 3,787,514,000.54
  5. Step 5: Solve for x
    x = 3,787,514,000.54/57,391.56
  6. Step 6: Final answer
    x = 65,994.27

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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.