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Finding the Fourth Proportional to 17,704.66, 26,538.39 and 8,921.15

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Solution

The fourth proportional to 17,704.66, 26,538.39 and 8,921.15 is: 13,372.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,704.66 : 26,538.39 = 8,921.15 : x
  2. Step 2: Convert to fraction form
    17,704.66/26,538.39 = 8,921.15/x
  3. Step 3: Cross multiply
    17,704.66x = 26,538.39 × 8,921.15
  4. Step 4: Simplify right side
    17,704.66x = 236,752,957.95
  5. Step 5: Solve for x
    x = 236,752,957.95/17,704.66
  6. Step 6: Final answer
    x = 13,372.35

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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.