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Finding the Fourth Proportional to 2,165.74, 3,249.21 and 704.84

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Solution

The fourth proportional to 2,165.74, 3,249.21 and 704.84 is: 1,057.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,165.74 : 3,249.21 = 704.84 : x
  2. Step 2: Convert to fraction form
    2,165.74/3,249.21 = 704.84/x
  3. Step 3: Cross multiply
    2,165.74x = 3,249.21 × 704.84
  4. Step 4: Simplify right side
    2,165.74x = 2,290,159.57
  5. Step 5: Solve for x
    x = 2,290,159.57/2,165.74
  6. Step 6: Final answer
    x = 1,057.45

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1.5x scale

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.