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Finding the Fourth Proportional to 13,149.62, 18,144.08 and 7,484.04

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Solution

The fourth proportional to 13,149.62, 18,144.08 and 7,484.04 is: 10,326.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,149.62 : 18,144.08 = 7,484.04 : x
  2. Step 2: Convert to fraction form
    13,149.62/18,144.08 = 7,484.04/x
  3. Step 3: Cross multiply
    13,149.62x = 18,144.08 × 7,484.04
  4. Step 4: Simplify right side
    13,149.62x = 135,790,983.06
  5. Step 5: Solve for x
    x = 135,790,983.06/13,149.62
  6. Step 6: Final answer
    x = 10,326.61

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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.