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Finding the Fourth Proportional to 18,692.01, 27,997.81 and 8,816.49

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Solution

The fourth proportional to 18,692.01, 27,997.81 and 8,816.49 is: 13,205.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,692.01 : 27,997.81 = 8,816.49 : x
  2. Step 2: Convert to fraction form
    18,692.01/27,997.81 = 8,816.49/x
  3. Step 3: Cross multiply
    18,692.01x = 27,997.81 × 8,816.49
  4. Step 4: Simplify right side
    18,692.01x = 246,842,411.89
  5. Step 5: Solve for x
    x = 246,842,411.89/18,692.01
  6. Step 6: Final answer
    x = 13,205.77

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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.