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Finding the Fourth Proportional to 8,654.26, 11,942.76 and 5,119.42

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Solution

The fourth proportional to 8,654.26, 11,942.76 and 5,119.42 is: 7,064.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,654.26 : 11,942.76 = 5,119.42 : x
  2. Step 2: Convert to fraction form
    8,654.26/11,942.76 = 5,119.42/x
  3. Step 3: Cross multiply
    8,654.26x = 11,942.76 × 5,119.42
  4. Step 4: Simplify right side
    8,654.26x = 61,140,004.40
  5. Step 5: Solve for x
    x = 61,140,004.40/8,654.26
  6. Step 6: Final answer
    x = 7,064.73

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Half scale
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Similar ratio
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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.