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Finding the Fourth Proportional to 3,967.57, 5,474.95 and 2,174.91

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Solution

The fourth proportional to 3,967.57, 5,474.95 and 2,174.91 is: 3,001.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,967.57 : 5,474.95 = 2,174.91 : x
  2. Step 2: Convert to fraction form
    3,967.57/5,474.95 = 2,174.91/x
  3. Step 3: Cross multiply
    3,967.57x = 5,474.95 × 2,174.91
  4. Step 4: Simplify right side
    3,967.57x = 11,907,523.50
  5. Step 5: Solve for x
    x = 11,907,523.50/3,967.57
  6. Step 6: Final answer
    x = 3,001.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.