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Finding the Fourth Proportional to 17,890.74, 26,847.03 and 11,307.86

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Solution

The fourth proportional to 17,890.74, 26,847.03 and 11,307.86 is: 16,968.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,890.74 : 26,847.03 = 11,307.86 : x
  2. Step 2: Convert to fraction form
    17,890.74/26,847.03 = 11,307.86/x
  3. Step 3: Cross multiply
    17,890.74x = 26,847.03 × 11,307.86
  4. Step 4: Simplify right side
    17,890.74x = 303,582,456.66
  5. Step 5: Solve for x
    x = 303,582,456.66/17,890.74
  6. Step 6: Final answer
    x = 16,968.69

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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.