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Finding the Fourth Proportional to 11,712.78, 17,574.94 and 5,473.22

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Solution

The fourth proportional to 11,712.78, 17,574.94 and 5,473.22 is: 8,212.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,712.78 : 17,574.94 = 5,473.22 : x
  2. Step 2: Convert to fraction form
    11,712.78/17,574.94 = 5,473.22/x
  3. Step 3: Cross multiply
    11,712.78x = 17,574.94 × 5,473.22
  4. Step 4: Simplify right side
    11,712.78x = 96,191,570.73
  5. Step 5: Solve for x
    x = 96,191,570.73/11,712.78
  6. Step 6: Final answer
    x = 8,212.53

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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.