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Finding the Fourth Proportional to 18,596.72, 27,908.16 and 8,736.32

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Solution

The fourth proportional to 18,596.72, 27,908.16 and 8,736.32 is: 13,110.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,596.72 : 27,908.16 = 8,736.32 : x
  2. Step 2: Convert to fraction form
    18,596.72/27,908.16 = 8,736.32/x
  3. Step 3: Cross multiply
    18,596.72x = 27,908.16 × 8,736.32
  4. Step 4: Simplify right side
    18,596.72x = 243,814,616.37
  5. Step 5: Solve for x
    x = 243,814,616.37/18,596.72
  6. Step 6: Final answer
    x = 13,110.62

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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.