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Finding the Fourth Proportional to 19,995.50, 27,593.79 and 11,612.54

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Solution

The fourth proportional to 19,995.50, 27,593.79 and 11,612.54 is: 16,025.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,995.50 : 27,593.79 = 11,612.54 : x
  2. Step 2: Convert to fraction form
    19,995.50/27,593.79 = 11,612.54/x
  3. Step 3: Cross multiply
    19,995.50x = 27,593.79 × 11,612.54
  4. Step 4: Simplify right side
    19,995.50x = 320,433,990.13
  5. Step 5: Solve for x
    x = 320,433,990.13/19,995.50
  6. Step 6: Final answer
    x = 16,025.31

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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.