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Finding the Fourth Proportional to 3,715.52, 5,573.26 and 979.52

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Solution

The fourth proportional to 3,715.52, 5,573.26 and 979.52 is: 1,469.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,715.52 : 5,573.26 = 979.52 : x
  2. Step 2: Convert to fraction form
    3,715.52/5,573.26 = 979.52/x
  3. Step 3: Cross multiply
    3,715.52x = 5,573.26 × 979.52
  4. Step 4: Simplify right side
    3,715.52x = 5,459,119.64
  5. Step 5: Solve for x
    x = 5,459,119.64/3,715.52
  6. Step 6: Final answer
    x = 1,469.27

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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.