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Finding the Fourth Proportional to 16,980, 25,476.07 and 8,662.11

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Solution

The fourth proportional to 16,980, 25,476.07 and 8,662.11 is: 12,996.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,980 : 25,476.07 = 8,662.11 : x
  2. Step 2: Convert to fraction form
    16,980/25,476.07 = 8,662.11/x
  3. Step 3: Cross multiply
    16,980x = 25,476.07 × 8,662.11
  4. Step 4: Simplify right side
    16,980x = 220,676,520.71
  5. Step 5: Solve for x
    x = 220,676,520.71/16,980
  6. Step 6: Final answer
    x = 12,996.26

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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.