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Finding the Fourth Proportional to 17,318.70, 25,974.45 and 7,458.30

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Solution

The fourth proportional to 17,318.70, 25,974.45 and 7,458.30 is: 11,185.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,318.70 : 25,974.45 = 7,458.30 : x
  2. Step 2: Convert to fraction form
    17,318.70/25,974.45 = 7,458.30/x
  3. Step 3: Cross multiply
    17,318.70x = 25,974.45 × 7,458.30
  4. Step 4: Simplify right side
    17,318.70x = 193,725,240.44
  5. Step 5: Solve for x
    x = 193,725,240.44/17,318.70
  6. Step 6: Final answer
    x = 11,185.90

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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.