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Finding the Fourth Proportional to 5,731.17, 7,909.23 and 3,213.29

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Solution

The fourth proportional to 5,731.17, 7,909.23 and 3,213.29 is: 4,434.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,731.17 : 7,909.23 = 3,213.29 : x
  2. Step 2: Convert to fraction form
    5,731.17/7,909.23 = 3,213.29/x
  3. Step 3: Cross multiply
    5,731.17x = 7,909.23 × 3,213.29
  4. Step 4: Simplify right side
    5,731.17x = 25,414,610.12
  5. Step 5: Solve for x
    x = 25,414,610.12/5,731.17
  6. Step 6: Final answer
    x = 4,434.45

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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.