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Finding the Fourth Proportional to 31,940.83, 47,911.04 and 9,754.12

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Solution

The fourth proportional to 31,940.83, 47,911.04 and 9,754.12 is: 14,631.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,940.83 : 47,911.04 = 9,754.12 : x
  2. Step 2: Convert to fraction form
    31,940.83/47,911.04 = 9,754.12/x
  3. Step 3: Cross multiply
    31,940.83x = 47,911.04 × 9,754.12
  4. Step 4: Simplify right side
    31,940.83x = 467,329,745.16
  5. Step 5: Solve for x
    x = 467,329,745.16/31,940.83
  6. Step 6: Final answer
    x = 14,631.11

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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.