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Finding the Fourth Proportional to 31,583.79, 47,367.45 and 9,391.22

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Solution

The fourth proportional to 31,583.79, 47,367.45 and 9,391.22 is: 14,084.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,583.79 : 47,367.45 = 9,391.22 : x
  2. Step 2: Convert to fraction form
    31,583.79/47,367.45 = 9,391.22/x
  3. Step 3: Cross multiply
    31,583.79x = 47,367.45 × 9,391.22
  4. Step 4: Simplify right side
    31,583.79x = 444,837,906.95
  5. Step 5: Solve for x
    x = 444,837,906.95/31,583.79
  6. Step 6: Final answer
    x = 14,084.37

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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.