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Finding the Fourth Proportional to 111,859.30, 167,815.21 and 36,979.44

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Solution

The fourth proportional to 111,859.30, 167,815.21 and 36,979.44 is: 55,477.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,859.30 : 167,815.21 = 36,979.44 : x
  2. Step 2: Convert to fraction form
    111,859.30/167,815.21 = 36,979.44/x
  3. Step 3: Cross multiply
    111,859.30x = 167,815.21 × 36,979.44
  4. Step 4: Simplify right side
    111,859.30x = 6,205,712,489.28
  5. Step 5: Solve for x
    x = 6,205,712,489.28/111,859.30
  6. Step 6: Final answer
    x = 55,477.84

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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.