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Finding the Fourth Proportional to 31,896.34, 47,837.18 and 9,401.20

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Solution

The fourth proportional to 31,896.34, 47,837.18 and 9,401.20 is: 14,099.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,896.34 : 47,837.18 = 9,401.20 : x
  2. Step 2: Convert to fraction form
    31,896.34/47,837.18 = 9,401.20/x
  3. Step 3: Cross multiply
    31,896.34x = 47,837.18 × 9,401.20
  4. Step 4: Simplify right side
    31,896.34x = 449,726,896.62
  5. Step 5: Solve for x
    x = 449,726,896.62/31,896.34
  6. Step 6: Final answer
    x = 14,099.64

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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.