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Finding the Fourth Proportional to 331,964.82, 458,080.68 and 188,696.88

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Solution

The fourth proportional to 331,964.82, 458,080.68 and 188,696.88 is: 260,384.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,964.82 : 458,080.68 = 188,696.88 : x
  2. Step 2: Convert to fraction form
    331,964.82/458,080.68 = 188,696.88/x
  3. Step 3: Cross multiply
    331,964.82x = 458,080.68 × 188,696.88
  4. Step 4: Simplify right side
    331,964.82x = 86,438,395,104.28
  5. Step 5: Solve for x
    x = 86,438,395,104.28/331,964.82
  6. Step 6: Final answer
    x = 260,384.20

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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.