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Finding the Fourth Proportional to 5,398.98, 7,449.90 and 3,160.44

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Solution

The fourth proportional to 5,398.98, 7,449.90 and 3,160.44 is: 4,361.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,398.98 : 7,449.90 = 3,160.44 : x
  2. Step 2: Convert to fraction form
    5,398.98/7,449.90 = 3,160.44/x
  3. Step 3: Cross multiply
    5,398.98x = 7,449.90 × 3,160.44
  4. Step 4: Simplify right side
    5,398.98x = 23,544,961.96
  5. Step 5: Solve for x
    x = 23,544,961.96/5,398.98
  6. Step 6: Final answer
    x = 4,361.00

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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.