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Finding the Fourth Proportional to 17,376.59, 23,979.74 and 9,418.81

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Solution

The fourth proportional to 17,376.59, 23,979.74 and 9,418.81 is: 12,997.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,376.59 : 23,979.74 = 9,418.81 : x
  2. Step 2: Convert to fraction form
    17,376.59/23,979.74 = 9,418.81/x
  3. Step 3: Cross multiply
    17,376.59x = 23,979.74 × 9,418.81
  4. Step 4: Simplify right side
    17,376.59x = 225,860,614.91
  5. Step 5: Solve for x
    x = 225,860,614.91/17,376.59
  6. Step 6: Final answer
    x = 12,997.98

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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.