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Finding the Third Proportional to 7,711.50 and 16,518

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Solution

The third proportional to 7,711.50 and 16,518 is: 35,381.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,711.50 : 16,518 = 16,518 : x
  2. Step 2: Convert to fraction form
    7,711.50/16,518 = 16,518/x
  3. Step 3: Cross multiply
    7,711.50x = 16,518 × 16,518
  4. Step 4: Simplify right side
    7,711.50x = 272,844,324
  5. Step 5: Solve for x
    x = 272,844,324/7,711.50
  6. Step 6: Final answer
    x = 35,381.49

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Why These Related Problems?

These problems maintain the same ratio (2.14) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.