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Finding the Fourth Proportional to 12,601.99, 17,390.61 and 6,936.62

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Solution

The fourth proportional to 12,601.99, 17,390.61 and 6,936.62 is: 9,572.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,601.99 : 17,390.61 = 6,936.62 : x
  2. Step 2: Convert to fraction form
    12,601.99/17,390.61 = 6,936.62/x
  3. Step 3: Cross multiply
    12,601.99x = 17,390.61 × 6,936.62
  4. Step 4: Simplify right side
    12,601.99x = 120,631,940.17
  5. Step 5: Solve for x
    x = 120,631,940.17/12,601.99
  6. Step 6: Final answer
    x = 9,572.45

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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.