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Finding the Third Proportional to 7,666.50 and 11,355

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Solution

The third proportional to 7,666.50 and 11,355 is: 16,818.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,666.50 : 11,355 = 11,355 : x
  2. Step 2: Convert to fraction form
    7,666.50/11,355 = 11,355/x
  3. Step 3: Cross multiply
    7,666.50x = 11,355 × 11,355
  4. Step 4: Simplify right side
    7,666.50x = 128,936,025
  5. Step 5: Solve for x
    x = 128,936,025/7,666.50
  6. Step 6: Final answer
    x = 16,818.11

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Why These Related Problems?

These problems maintain the same ratio (1.48) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.