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Finding the Fourth Proportional to 14,813.78, 20,443.25 and 8,845.97

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Solution

The fourth proportional to 14,813.78, 20,443.25 and 8,845.97 is: 12,207.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,813.78 : 20,443.25 = 8,845.97 : x
  2. Step 2: Convert to fraction form
    14,813.78/20,443.25 = 8,845.97/x
  3. Step 3: Cross multiply
    14,813.78x = 20,443.25 × 8,845.97
  4. Step 4: Simplify right side
    14,813.78x = 180,840,296.10
  5. Step 5: Solve for x
    x = 180,840,296.10/14,813.78
  6. Step 6: Final answer
    x = 12,207.58

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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.