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Finding the Fourth Proportional to 8,872.53, 12,206.35 and 8,626.49

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Solution

The fourth proportional to 8,872.53, 12,206.35 and 8,626.49 is: 11,867.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,872.53 : 12,206.35 = 8,626.49 : x
  2. Step 2: Convert to fraction form
    8,872.53/12,206.35 = 8,626.49/x
  3. Step 3: Cross multiply
    8,872.53x = 12,206.35 × 8,626.49
  4. Step 4: Simplify right side
    8,872.53x = 105,297,956.21
  5. Step 5: Solve for x
    x = 105,297,956.21/8,872.53
  6. Step 6: Final answer
    x = 11,867.86

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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.