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Finding the Fourth Proportional to 14,963.71, 20,648.77 and 8,249.32

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Solution

The fourth proportional to 14,963.71, 20,648.77 and 8,249.32 is: 11,383.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,963.71 : 20,648.77 = 8,249.32 : x
  2. Step 2: Convert to fraction form
    14,963.71/20,648.77 = 8,249.32/x
  3. Step 3: Cross multiply
    14,963.71x = 20,648.77 × 8,249.32
  4. Step 4: Simplify right side
    14,963.71x = 170,338,304.85
  5. Step 5: Solve for x
    x = 170,338,304.85/14,963.71
  6. Step 6: Final answer
    x = 11,383.43

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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.