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Finding the Fourth Proportional to 6,305.79, 8,701.86 and 3,949.23

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Solution

The fourth proportional to 6,305.79, 8,701.86 and 3,949.23 is: 5,449.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,305.79 : 8,701.86 = 3,949.23 : x
  2. Step 2: Convert to fraction form
    6,305.79/8,701.86 = 3,949.23/x
  3. Step 3: Cross multiply
    6,305.79x = 8,701.86 × 3,949.23
  4. Step 4: Simplify right side
    6,305.79x = 34,365,606.53
  5. Step 5: Solve for x
    x = 34,365,606.53/6,305.79
  6. Step 6: Final answer
    x = 5,449.85

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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.