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Finding the Fourth Proportional to 18,305.68, 25,261.86 and 9,922.18

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Solution

The fourth proportional to 18,305.68, 25,261.86 and 9,922.18 is: 13,692.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,305.68 : 25,261.86 = 9,922.18 : x
  2. Step 2: Convert to fraction form
    18,305.68/25,261.86 = 9,922.18/x
  3. Step 3: Cross multiply
    18,305.68x = 25,261.86 × 9,922.18
  4. Step 4: Simplify right side
    18,305.68x = 250,652,722.05
  5. Step 5: Solve for x
    x = 250,652,722.05/18,305.68
  6. Step 6: Final answer
    x = 13,692.62

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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.