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Finding the Fourth Proportional to 17,908.98, 26,856.17 and 8,045.61

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Solution

The fourth proportional to 17,908.98, 26,856.17 and 8,045.61 is: 12,065.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,908.98 : 26,856.17 = 8,045.61 : x
  2. Step 2: Convert to fraction form
    17,908.98/26,856.17 = 8,045.61/x
  3. Step 3: Cross multiply
    17,908.98x = 26,856.17 × 8,045.61
  4. Step 4: Simplify right side
    17,908.98x = 216,074,269.91
  5. Step 5: Solve for x
    x = 216,074,269.91/17,908.98
  6. Step 6: Final answer
    x = 12,065.14

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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.