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Finding the Fourth Proportional to 31,716.52, 47,596.62 and 10,940

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Solution

The fourth proportional to 31,716.52, 47,596.62 and 10,940 is: 16,417.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,716.52 : 47,596.62 = 10,940 : x
  2. Step 2: Convert to fraction form
    31,716.52/47,596.62 = 10,940/x
  3. Step 3: Cross multiply
    31,716.52x = 47,596.62 × 10,940
  4. Step 4: Simplify right side
    31,716.52x = 520,707,022.80
  5. Step 5: Solve for x
    x = 520,707,022.80/31,716.52
  6. Step 6: Final answer
    x = 16,417.53

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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.