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Finding the Fourth Proportional to 17,863.36, 26,774.88 and 8,618.56

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Solution

The fourth proportional to 17,863.36, 26,774.88 and 8,618.56 is: 12,918.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,863.36 : 26,774.88 = 8,618.56 : x
  2. Step 2: Convert to fraction form
    17,863.36/26,774.88 = 8,618.56/x
  3. Step 3: Cross multiply
    17,863.36x = 26,774.88 × 8,618.56
  4. Step 4: Simplify right side
    17,863.36x = 230,760,909.77
  5. Step 5: Solve for x
    x = 230,760,909.77/17,863.36
  6. Step 6: Final answer
    x = 12,918.11

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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.