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Finding the Fourth Proportional to 7,973, 11,960.04 and 2,129.48

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Solution

The fourth proportional to 7,973, 11,960.04 and 2,129.48 is: 3,194.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,973 : 11,960.04 = 2,129.48 : x
  2. Step 2: Convert to fraction form
    7,973/11,960.04 = 2,129.48/x
  3. Step 3: Cross multiply
    7,973x = 11,960.04 × 2,129.48
  4. Step 4: Simplify right side
    7,973x = 25,468,665.98
  5. Step 5: Solve for x
    x = 25,468,665.98/7,973
  6. Step 6: Final answer
    x = 3,194.36

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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.