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Finding the Fourth Proportional to 3,951,542.88, 5,928,189.12 and 1,256,692.32

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Solution

The fourth proportional to 3,951,542.88, 5,928,189.12 and 1,256,692.32 is: 1,885,316.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,951,542.88 : 5,928,189.12 = 1,256,692.32 : x
  2. Step 2: Convert to fraction form
    3,951,542.88/5,928,189.12 = 1,256,692.32/x
  3. Step 3: Cross multiply
    3,951,542.88x = 5,928,189.12 × 1,256,692.32
  4. Step 4: Simplify right side
    3,951,542.88x = 7,449,909,738,611.56
  5. Step 5: Solve for x
    x = 7,449,909,738,611.56/3,951,542.88
  6. Step 6: Final answer
    x = 1,885,316.69

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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.