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Finding the Fourth Proportional to 17,894.40, 26,863.20 and 17,764.80

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Solution

The fourth proportional to 17,894.40, 26,863.20 and 17,764.80 is: 26,668.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,894.40 : 26,863.20 = 17,764.80 : x
  2. Step 2: Convert to fraction form
    17,894.40/26,863.20 = 17,764.80/x
  3. Step 3: Cross multiply
    17,894.40x = 26,863.20 × 17,764.80
  4. Step 4: Simplify right side
    17,894.40x = 477,219,375.36
  5. Step 5: Solve for x
    x = 477,219,375.36/17,894.40
  6. Step 6: Final answer
    x = 26,668.64

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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.