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Finding the Fourth Proportional to 167,137.80, 230,636.44 and 91,686.30

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Solution

The fourth proportional to 167,137.80, 230,636.44 and 91,686.30 is: 126,519.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    167,137.80 : 230,636.44 = 91,686.30 : x
  2. Step 2: Convert to fraction form
    167,137.80/230,636.44 = 91,686.30/x
  3. Step 3: Cross multiply
    167,137.80x = 230,636.44 × 91,686.30
  4. Step 4: Simplify right side
    167,137.80x = 21,146,201,828.77
  5. Step 5: Solve for x
    x = 21,146,201,828.77/167,137.80
  6. Step 6: Final answer
    x = 126,519.57

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.