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Finding the Fourth Proportional to 18,805.77, 25,945.08 and 11,252.31

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Solution

The fourth proportional to 18,805.77, 25,945.08 and 11,252.31 is: 15,524.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,805.77 : 25,945.08 = 11,252.31 : x
  2. Step 2: Convert to fraction form
    18,805.77/25,945.08 = 11,252.31/x
  3. Step 3: Cross multiply
    18,805.77x = 25,945.08 × 11,252.31
  4. Step 4: Simplify right side
    18,805.77x = 291,942,083.13
  5. Step 5: Solve for x
    x = 291,942,083.13/18,805.77
  6. Step 6: Final answer
    x = 15,524.07

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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.