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Finding the Fourth Proportional to 655,837.03, 983,662.11 and 206,546.21

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Solution

The fourth proportional to 655,837.03, 983,662.11 and 206,546.21 is: 309,789.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    655,837.03 : 983,662.11 = 206,546.21 : x
  2. Step 2: Convert to fraction form
    655,837.03/983,662.11 = 206,546.21/x
  3. Step 3: Cross multiply
    655,837.03x = 983,662.11 × 206,546.21
  4. Step 4: Simplify right side
    655,837.03x = 203,171,679,511.53
  5. Step 5: Solve for x
    x = 203,171,679,511.53/655,837.03
  6. Step 6: Final answer
    x = 309,789.89

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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.