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Finding the Fourth Proportional to 47,392.72, 71,065.22 and 15,791.58

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Solution

The fourth proportional to 47,392.72, 71,065.22 and 15,791.58 is: 23,679.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,392.72 : 71,065.22 = 15,791.58 : x
  2. Step 2: Convert to fraction form
    47,392.72/71,065.22 = 15,791.58/x
  3. Step 3: Cross multiply
    47,392.72x = 71,065.22 × 15,791.58
  4. Step 4: Simplify right side
    47,392.72x = 1,122,232,106.85
  5. Step 5: Solve for x
    x = 1,122,232,106.85/47,392.72
  6. Step 6: Final answer
    x = 23,679.42

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.