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Finding the Fourth Proportional to 17,987.94, 26,984.17 and 6,143.95

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Solution

The fourth proportional to 17,987.94, 26,984.17 and 6,143.95 is: 9,216.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,987.94 : 26,984.17 = 6,143.95 : x
  2. Step 2: Convert to fraction form
    17,987.94/26,984.17 = 6,143.95/x
  3. Step 3: Cross multiply
    17,987.94x = 26,984.17 × 6,143.95
  4. Step 4: Simplify right side
    17,987.94x = 165,789,391.27
  5. Step 5: Solve for x
    x = 165,789,391.27/17,987.94
  6. Step 6: Final answer
    x = 9,216.70

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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.