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Finding the Fourth Proportional to 18,463.80, 27,695.70 and 8,073.12

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Solution

The fourth proportional to 18,463.80, 27,695.70 and 8,073.12 is: 12,109.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,463.80 : 27,695.70 = 8,073.12 : x
  2. Step 2: Convert to fraction form
    18,463.80/27,695.70 = 8,073.12/x
  3. Step 3: Cross multiply
    18,463.80x = 27,695.70 × 8,073.12
  4. Step 4: Simplify right side
    18,463.80x = 223,590,709.58
  5. Step 5: Solve for x
    x = 223,590,709.58/18,463.80
  6. Step 6: Final answer
    x = 12,109.68

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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.