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Finding the Fourth Proportional to 5,730.88, 7,909.10 and 3,309.02

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Solution

The fourth proportional to 5,730.88, 7,909.10 and 3,309.02 is: 4,566.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,730.88 : 7,909.10 = 3,309.02 : x
  2. Step 2: Convert to fraction form
    5,730.88/7,909.10 = 3,309.02/x
  3. Step 3: Cross multiply
    5,730.88x = 7,909.10 × 3,309.02
  4. Step 4: Simplify right side
    5,730.88x = 26,171,353.54
  5. Step 5: Solve for x
    x = 26,171,353.54/5,730.88
  6. Step 6: Final answer
    x = 4,566.73

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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.