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Finding the Fourth Proportional to 31,896.99, 47,843.87 and 9,709.88

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Solution

The fourth proportional to 31,896.99, 47,843.87 and 9,709.88 is: 14,564.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,896.99 : 47,843.87 = 9,709.88 : x
  2. Step 2: Convert to fraction form
    31,896.99/47,843.87 = 9,709.88/x
  3. Step 3: Cross multiply
    31,896.99x = 47,843.87 × 9,709.88
  4. Step 4: Simplify right side
    31,896.99x = 464,557,948.67
  5. Step 5: Solve for x
    x = 464,557,948.67/31,896.99
  6. Step 6: Final answer
    x = 14,564.32

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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.