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Finding the Fourth Proportional to 2,165.56, 3,247.72 and 704.84

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Solution

The fourth proportional to 2,165.56, 3,247.72 and 704.84 is: 1,057.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,165.56 : 3,247.72 = 704.84 : x
  2. Step 2: Convert to fraction form
    2,165.56/3,247.72 = 704.84/x
  3. Step 3: Cross multiply
    2,165.56x = 3,247.72 × 704.84
  4. Step 4: Simplify right side
    2,165.56x = 2,289,104.96
  5. Step 5: Solve for x
    x = 2,289,104.96/2,165.56
  6. Step 6: Final answer
    x = 1,057.05

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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.