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Finding the Fourth Proportional to 9,295.72, 13,930.92 and 5,129.52

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Solution

The fourth proportional to 9,295.72, 13,930.92 and 5,129.52 is: 7,687.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,295.72 : 13,930.92 = 5,129.52 : x
  2. Step 2: Convert to fraction form
    9,295.72/13,930.92 = 5,129.52/x
  3. Step 3: Cross multiply
    9,295.72x = 13,930.92 × 5,129.52
  4. Step 4: Simplify right side
    9,295.72x = 71,458,932.76
  5. Step 5: Solve for x
    x = 71,458,932.76/9,295.72
  6. Step 6: Final answer
    x = 7,687.29

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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.