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Finding the Fourth Proportional to 14,934, 20,608.92 and 8,310

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Solution

The fourth proportional to 14,934, 20,608.92 and 8,310 is: 11,467.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,934 : 20,608.92 = 8,310 : x
  2. Step 2: Convert to fraction form
    14,934/20,608.92 = 8,310/x
  3. Step 3: Cross multiply
    14,934x = 20,608.92 × 8,310
  4. Step 4: Simplify right side
    14,934x = 171,260,125.20
  5. Step 5: Solve for x
    x = 171,260,125.20/14,934
  6. Step 6: Final answer
    x = 11,467.80

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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.