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Finding the Fourth Proportional to 13,627.11, 20,440.65 and 5,731.11

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Solution

The fourth proportional to 13,627.11, 20,440.65 and 5,731.11 is: 8,596.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,627.11 : 20,440.65 = 5,731.11 : x
  2. Step 2: Convert to fraction form
    13,627.11/20,440.65 = 5,731.11/x
  3. Step 3: Cross multiply
    13,627.11x = 20,440.65 × 5,731.11
  4. Step 4: Simplify right side
    13,627.11x = 117,147,613.62
  5. Step 5: Solve for x
    x = 117,147,613.62/13,627.11
  6. Step 6: Final answer
    x = 8,596.66

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.