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Finding the Fourth Proportional to 12,641.69, 18,965.25 and 4,850.44

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Solution

The fourth proportional to 12,641.69, 18,965.25 and 4,850.44 is: 7,276.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,641.69 : 18,965.25 = 4,850.44 : x
  2. Step 2: Convert to fraction form
    12,641.69/18,965.25 = 4,850.44/x
  3. Step 3: Cross multiply
    12,641.69x = 18,965.25 × 4,850.44
  4. Step 4: Simplify right side
    12,641.69x = 91,989,759.80
  5. Step 5: Solve for x
    x = 91,989,759.80/12,641.69
  6. Step 6: Final answer
    x = 7,276.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.