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Finding the Fourth Proportional to 18,422.88, 27,633.03 and 7,892.88

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Solution

The fourth proportional to 18,422.88, 27,633.03 and 7,892.88 is: 11,838.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,422.88 : 27,633.03 = 7,892.88 : x
  2. Step 2: Convert to fraction form
    18,422.88/27,633.03 = 7,892.88/x
  3. Step 3: Cross multiply
    18,422.88x = 27,633.03 × 7,892.88
  4. Step 4: Simplify right side
    18,422.88x = 218,104,189.83
  5. Step 5: Solve for x
    x = 218,104,189.83/18,422.88
  6. Step 6: Final answer
    x = 11,838.77

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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.