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Finding the Fourth Proportional to 6,295.85, 8,687.78 and 3,643.46

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Solution

The fourth proportional to 6,295.85, 8,687.78 and 3,643.46 is: 5,027.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,295.85 : 8,687.78 = 3,643.46 : x
  2. Step 2: Convert to fraction form
    6,295.85/8,687.78 = 3,643.46/x
  3. Step 3: Cross multiply
    6,295.85x = 8,687.78 × 3,643.46
  4. Step 4: Simplify right side
    6,295.85x = 31,653,578.92
  5. Step 5: Solve for x
    x = 31,653,578.92/6,295.85
  6. Step 6: Final answer
    x = 5,027.69

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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.