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Finding the Fourth Proportional to 19,992.92, 27,589.91 and 11,040.19

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Solution

The fourth proportional to 19,992.92, 27,589.91 and 11,040.19 is: 15,235.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,992.92 : 27,589.91 = 11,040.19 : x
  2. Step 2: Convert to fraction form
    19,992.92/27,589.91 = 11,040.19/x
  3. Step 3: Cross multiply
    19,992.92x = 27,589.91 × 11,040.19
  4. Step 4: Simplify right side
    19,992.92x = 304,597,724.31
  5. Step 5: Solve for x
    x = 304,597,724.31/19,992.92
  6. Step 6: Final answer
    x = 15,235.28

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Half scale
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Double scale
Find fourth proportional to 19,993.92, 27,591.28 and 11,041.19
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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.