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Finding the Fourth Proportional to 8,873.10, 12,245.76 and 6,631.09

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Solution

The fourth proportional to 8,873.10, 12,245.76 and 6,631.09 is: 9,151.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,873.10 : 12,245.76 = 6,631.09 : x
  2. Step 2: Convert to fraction form
    8,873.10/12,245.76 = 6,631.09/x
  3. Step 3: Cross multiply
    8,873.10x = 12,245.76 × 6,631.09
  4. Step 4: Simplify right side
    8,873.10x = 81,202,706.06
  5. Step 5: Solve for x
    x = 81,202,706.06/8,873.10
  6. Step 6: Final answer
    x = 9,151.56

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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.