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Finding the Fourth Proportional to 11,609.36, 17,404.32 and 4,679

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Solution

The fourth proportional to 11,609.36, 17,404.32 and 4,679 is: 7,014.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,609.36 : 17,404.32 = 4,679 : x
  2. Step 2: Convert to fraction form
    11,609.36/17,404.32 = 4,679/x
  3. Step 3: Cross multiply
    11,609.36x = 17,404.32 × 4,679
  4. Step 4: Simplify right side
    11,609.36x = 81,434,813.28
  5. Step 5: Solve for x
    x = 81,434,813.28/11,609.36
  6. Step 6: Final answer
    x = 7,014.58

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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.