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Finding the Fourth Proportional to 18,837.92, 25,995.12 and 11,763.92

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Solution

The fourth proportional to 18,837.92, 25,995.12 and 11,763.92 is: 16,233.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,837.92 : 25,995.12 = 11,763.92 : x
  2. Step 2: Convert to fraction form
    18,837.92/25,995.12 = 11,763.92/x
  3. Step 3: Cross multiply
    18,837.92x = 25,995.12 × 11,763.92
  4. Step 4: Simplify right side
    18,837.92x = 305,804,512.07
  5. Step 5: Solve for x
    x = 305,804,512.07/18,837.92
  6. Step 6: Final answer
    x = 16,233.45

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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.