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Finding the Fourth Proportional to 18,636.62, 27,941.24 and 8,770.50

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Solution

The fourth proportional to 18,636.62, 27,941.24 and 8,770.50 is: 13,149.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,636.62 : 27,941.24 = 8,770.50 : x
  2. Step 2: Convert to fraction form
    18,636.62/27,941.24 = 8,770.50/x
  3. Step 3: Cross multiply
    18,636.62x = 27,941.24 × 8,770.50
  4. Step 4: Simplify right side
    18,636.62x = 245,058,667.35
  5. Step 5: Solve for x
    x = 245,058,667.35/18,636.62
  6. Step 6: Final answer
    x = 13,149.31

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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.