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Finding the Fourth Proportional to 18,617.94, 25,692.05 and 10,660.91

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Solution

The fourth proportional to 18,617.94, 25,692.05 and 10,660.91 is: 14,711.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,617.94 : 25,692.05 = 10,660.91 : x
  2. Step 2: Convert to fraction form
    18,617.94/25,692.05 = 10,660.91/x
  3. Step 3: Cross multiply
    18,617.94x = 25,692.05 × 10,660.91
  4. Step 4: Simplify right side
    18,617.94x = 273,900,530.96
  5. Step 5: Solve for x
    x = 273,900,530.96/18,617.94
  6. Step 6: Final answer
    x = 14,711.65

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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.