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Finding the Fourth Proportional to 550,991.70, 826,487.55 and 481,007.70

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Solution

The fourth proportional to 550,991.70, 826,487.55 and 481,007.70 is: 721,511.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    550,991.70 : 826,487.55 = 481,007.70 : x
  2. Step 2: Convert to fraction form
    550,991.70/826,487.55 = 481,007.70/x
  3. Step 3: Cross multiply
    550,991.70x = 826,487.55 × 481,007.70
  4. Step 4: Simplify right side
    550,991.70x = 397,546,875,504.14
  5. Step 5: Solve for x
    x = 397,546,875,504.14/550,991.70
  6. Step 6: Final answer
    x = 721,511.55

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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.