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Finding the Fourth Proportional to 2,453.21, 3,679.86 and 698.26

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Solution

The fourth proportional to 2,453.21, 3,679.86 and 698.26 is: 1,047.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,453.21 : 3,679.86 = 698.26 : x
  2. Step 2: Convert to fraction form
    2,453.21/3,679.86 = 698.26/x
  3. Step 3: Cross multiply
    2,453.21x = 3,679.86 × 698.26
  4. Step 4: Simplify right side
    2,453.21x = 2,569,508.98
  5. Step 5: Solve for x
    x = 2,569,508.98/2,453.21
  6. Step 6: Final answer
    x = 1,047.41

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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.