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Finding the Third Proportional to 14,986.50 and 31,515

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Solution

The third proportional to 14,986.50 and 31,515 is: 66,272.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,986.50 : 31,515 = 31,515 : x
  2. Step 2: Convert to fraction form
    14,986.50/31,515 = 31,515/x
  3. Step 3: Cross multiply
    14,986.50x = 31,515 × 31,515
  4. Step 4: Simplify right side
    14,986.50x = 993,195,225
  5. Step 5: Solve for x
    x = 993,195,225/14,986.50
  6. Step 6: Final answer
    x = 66,272.66

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Why These Related Problems?

These problems maintain the same ratio (2.10) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.