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Finding the Third Proportional to 7,890.75 and 16,511.63

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Solution

The third proportional to 7,890.75 and 16,511.63 is: 34,551.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,890.75 : 16,511.63 = 16,511.63 : x
  2. Step 2: Convert to fraction form
    7,890.75/16,511.63 = 16,511.63/x
  3. Step 3: Cross multiply
    7,890.75x = 16,511.63 × 16,511.63
  4. Step 4: Simplify right side
    7,890.75x = 272,633,760.14
  5. Step 5: Solve for x
    x = 272,633,760.14/7,890.75
  6. Step 6: Final answer
    x = 34,551.06

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Why These Related Problems?

These problems maintain the same ratio (2.09) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.