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Finding the Third Proportional to 16,717.50 and 36,315

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Solution

The third proportional to 16,717.50 and 36,315 is: 78,886.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,717.50 : 36,315 = 36,315 : x
  2. Step 2: Convert to fraction form
    16,717.50/36,315 = 36,315/x
  3. Step 3: Cross multiply
    16,717.50x = 36,315 × 36,315
  4. Step 4: Simplify right side
    16,717.50x = 1,318,779,225
  5. Step 5: Solve for x
    x = 1,318,779,225/16,717.50
  6. Step 6: Final answer
    x = 78,886.15

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.