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Finding the Fourth Proportional to 18,616.60, 27,908.70 and 16,648.30

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Solution

The fourth proportional to 18,616.60, 27,908.70 and 16,648.30 is: 24,957.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,616.60 : 27,908.70 = 16,648.30 : x
  2. Step 2: Convert to fraction form
    18,616.60/27,908.70 = 16,648.30/x
  3. Step 3: Cross multiply
    18,616.60x = 27,908.70 × 16,648.30
  4. Step 4: Simplify right side
    18,616.60x = 464,632,410.21
  5. Step 5: Solve for x
    x = 464,632,410.21/18,616.60
  6. Step 6: Final answer
    x = 24,957.96

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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.