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Finding the Fourth Proportional to 281,930.82, 389,073.54 and 154,606.11

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Solution

The fourth proportional to 281,930.82, 389,073.54 and 154,606.11 is: 213,361.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,930.82 : 389,073.54 = 154,606.11 : x
  2. Step 2: Convert to fraction form
    281,930.82/389,073.54 = 154,606.11/x
  3. Step 3: Cross multiply
    281,930.82x = 389,073.54 × 154,606.11
  4. Step 4: Simplify right side
    281,930.82x = 60,153,146,523.33
  5. Step 5: Solve for x
    x = 60,153,146,523.33/281,930.82
  6. Step 6: Final answer
    x = 213,361.37

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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.