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Finding the Fourth Proportional to 111,218.63, 166,891.79 and 110,315.88

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Solution

The fourth proportional to 111,218.63, 166,891.79 and 110,315.88 is: 165,537.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,218.63 : 166,891.79 = 110,315.88 : x
  2. Step 2: Convert to fraction form
    111,218.63/166,891.79 = 110,315.88/x
  3. Step 3: Cross multiply
    111,218.63x = 166,891.79 × 110,315.88
  4. Step 4: Simplify right side
    111,218.63x = 18,410,814,954.41
  5. Step 5: Solve for x
    x = 18,410,814,954.41/111,218.63
  6. Step 6: Final answer
    x = 165,537.16

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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.