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Finding the Fourth Proportional to 8,467.67, 11,691.09 and 5,285.81

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Solution

The fourth proportional to 8,467.67, 11,691.09 and 5,285.81 is: 7,297.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,467.67 : 11,691.09 = 5,285.81 : x
  2. Step 2: Convert to fraction form
    8,467.67/11,691.09 = 5,285.81/x
  3. Step 3: Cross multiply
    8,467.67x = 11,691.09 × 5,285.81
  4. Step 4: Simplify right side
    8,467.67x = 61,796,854.00
  5. Step 5: Solve for x
    x = 61,796,854.00/8,467.67
  6. Step 6: Final answer
    x = 7,297.98

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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.