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Finding the Fourth Proportional to 13,167.66, 18,164.20 and 8,452.65

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Solution

The fourth proportional to 13,167.66, 18,164.20 and 8,452.65 is: 11,660.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,167.66 : 18,164.20 = 8,452.65 : x
  2. Step 2: Convert to fraction form
    13,167.66/18,164.20 = 8,452.65/x
  3. Step 3: Cross multiply
    13,167.66x = 18,164.20 × 8,452.65
  4. Step 4: Simplify right side
    13,167.66x = 153,535,687.96
  5. Step 5: Solve for x
    x = 153,535,687.96/13,167.66
  6. Step 6: Final answer
    x = 11,660.06

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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.