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Finding the Fourth Proportional to 2,091.94, 3,137.88 and 704.98

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Solution

The fourth proportional to 2,091.94, 3,137.88 and 704.98 is: 1,057.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,091.94 : 3,137.88 = 704.98 : x
  2. Step 2: Convert to fraction form
    2,091.94/3,137.88 = 704.98/x
  3. Step 3: Cross multiply
    2,091.94x = 3,137.88 × 704.98
  4. Step 4: Simplify right side
    2,091.94x = 2,212,142.64
  5. Step 5: Solve for x
    x = 2,212,142.64/2,091.94
  6. Step 6: Final answer
    x = 1,057.46

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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.