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Finding the Fourth Proportional to 547,759.10, 821,638.65 and 367,355.90

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Solution

The fourth proportional to 547,759.10, 821,638.65 and 367,355.90 is: 551,033.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,759.10 : 821,638.65 = 367,355.90 : x
  2. Step 2: Convert to fraction form
    547,759.10/821,638.65 = 367,355.90/x
  3. Step 3: Cross multiply
    547,759.10x = 821,638.65 × 367,355.90
  4. Step 4: Simplify right side
    547,759.10x = 301,833,805,745.54
  5. Step 5: Solve for x
    x = 301,833,805,745.54/547,759.10
  6. Step 6: Final answer
    x = 551,033.85

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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.