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Finding the Fourth Proportional to 8,443.97, 12,663.20 and 3,512.28

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Solution

The fourth proportional to 8,443.97, 12,663.20 and 3,512.28 is: 5,267.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,443.97 : 12,663.20 = 3,512.28 : x
  2. Step 2: Convert to fraction form
    8,443.97/12,663.20 = 3,512.28/x
  3. Step 3: Cross multiply
    8,443.97x = 12,663.20 × 3,512.28
  4. Step 4: Simplify right side
    8,443.97x = 44,476,704.10
  5. Step 5: Solve for x
    x = 44,476,704.10/8,443.97
  6. Step 6: Final answer
    x = 5,267.28

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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.