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Finding the Fourth Proportional to 18,225.97, 27,239.09 and 13,305.97

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Solution

The fourth proportional to 18,225.97, 27,239.09 and 13,305.97 is: 19,886.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,225.97 : 27,239.09 = 13,305.97 : x
  2. Step 2: Convert to fraction form
    18,225.97/27,239.09 = 13,305.97/x
  3. Step 3: Cross multiply
    18,225.97x = 27,239.09 × 13,305.97
  4. Step 4: Simplify right side
    18,225.97x = 362,442,514.37
  5. Step 5: Solve for x
    x = 362,442,514.37/18,225.97
  6. Step 6: Final answer
    x = 19,886.05

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.