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Finding the Fourth Proportional to 18,617.82, 25,692.54 and 10,660.20

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Solution

The fourth proportional to 18,617.82, 25,692.54 and 10,660.20 is: 14,711.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,617.82 : 25,692.54 = 10,660.20 : x
  2. Step 2: Convert to fraction form
    18,617.82/25,692.54 = 10,660.20/x
  3. Step 3: Cross multiply
    18,617.82x = 25,692.54 × 10,660.20
  4. Step 4: Simplify right side
    18,617.82x = 273,887,614.91
  5. Step 5: Solve for x
    x = 273,887,614.91/18,617.82
  6. Step 6: Final answer
    x = 14,711.05

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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.