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Finding the Fourth Proportional to 8,951.45, 12,360.47 and 7,467.15

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Solution

The fourth proportional to 8,951.45, 12,360.47 and 7,467.15 is: 10,310.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,951.45 : 12,360.47 = 7,467.15 : x
  2. Step 2: Convert to fraction form
    8,951.45/12,360.47 = 7,467.15/x
  3. Step 3: Cross multiply
    8,951.45x = 12,360.47 × 7,467.15
  4. Step 4: Simplify right side
    8,951.45x = 92,297,446.22
  5. Step 5: Solve for x
    x = 92,297,446.22/8,951.45
  6. Step 6: Final answer
    x = 10,310.90

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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.