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Finding the Fourth Proportional to 29,147.76, 43,721.37 and 9,425.88

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Solution

The fourth proportional to 29,147.76, 43,721.37 and 9,425.88 is: 14,138.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,147.76 : 43,721.37 = 9,425.88 : x
  2. Step 2: Convert to fraction form
    29,147.76/43,721.37 = 9,425.88/x
  3. Step 3: Cross multiply
    29,147.76x = 43,721.37 × 9,425.88
  4. Step 4: Simplify right side
    29,147.76x = 412,112,387.06
  5. Step 5: Solve for x
    x = 412,112,387.06/29,147.76
  6. Step 6: Final answer
    x = 14,138.73

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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.