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Finding the Fourth Proportional to 17,992.84, 26,989.02 and 8,125.22

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Solution

The fourth proportional to 17,992.84, 26,989.02 and 8,125.22 is: 12,187.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,992.84 : 26,989.02 = 8,125.22 : x
  2. Step 2: Convert to fraction form
    17,992.84/26,989.02 = 8,125.22/x
  3. Step 3: Cross multiply
    17,992.84x = 26,989.02 × 8,125.22
  4. Step 4: Simplify right side
    17,992.84x = 219,291,725.08
  5. Step 5: Solve for x
    x = 219,291,725.08/17,992.84
  6. Step 6: Final answer
    x = 12,187.72

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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.