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Finding the Fourth Proportional to 6,462.95, 8,918.63 and 3,949.26

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Solution

The fourth proportional to 6,462.95, 8,918.63 and 3,949.26 is: 5,449.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,462.95 : 8,918.63 = 3,949.26 : x
  2. Step 2: Convert to fraction form
    6,462.95/8,918.63 = 3,949.26/x
  3. Step 3: Cross multiply
    6,462.95x = 8,918.63 × 3,949.26
  4. Step 4: Simplify right side
    6,462.95x = 35,221,968.97
  5. Step 5: Solve for x
    x = 35,221,968.97/6,462.95
  6. Step 6: Final answer
    x = 5,449.83

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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.