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Finding the Fourth Proportional to 15,052.30, 20,770.22 and 8,679.14

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Solution

The fourth proportional to 15,052.30, 20,770.22 and 8,679.14 is: 11,976.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,052.30 : 20,770.22 = 8,679.14 : x
  2. Step 2: Convert to fraction form
    15,052.30/20,770.22 = 8,679.14/x
  3. Step 3: Cross multiply
    15,052.30x = 20,770.22 × 8,679.14
  4. Step 4: Simplify right side
    15,052.30x = 180,267,647.21
  5. Step 5: Solve for x
    x = 180,267,647.21/15,052.30
  6. Step 6: Final answer
    x = 11,976.09

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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.