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Finding the Fourth Proportional to 12,474.77, 17,215.04 and 7,169.18

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Solution

The fourth proportional to 12,474.77, 17,215.04 and 7,169.18 is: 9,893.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,474.77 : 17,215.04 = 7,169.18 : x
  2. Step 2: Convert to fraction form
    12,474.77/17,215.04 = 7,169.18/x
  3. Step 3: Cross multiply
    12,474.77x = 17,215.04 × 7,169.18
  4. Step 4: Simplify right side
    12,474.77x = 123,417,684.62
  5. Step 5: Solve for x
    x = 123,417,684.62/12,474.77
  6. Step 6: Final answer
    x = 9,893.38

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.