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Finding the Fourth Proportional to 111,359.61, 166,960.09 and 52,162.99

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Solution

The fourth proportional to 111,359.61, 166,960.09 and 52,162.99 is: 78,207.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,359.61 : 166,960.09 = 52,162.99 : x
  2. Step 2: Convert to fraction form
    111,359.61/166,960.09 = 52,162.99/x
  3. Step 3: Cross multiply
    111,359.61x = 166,960.09 × 52,162.99
  4. Step 4: Simplify right side
    111,359.61x = 8,709,137,778.97
  5. Step 5: Solve for x
    x = 8,709,137,778.97/111,359.61
  6. Step 6: Final answer
    x = 78,207.33

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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.