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Finding the Third Proportional to 40,186 and 87,515

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Solution

The third proportional to 40,186 and 87,515 is: 190,585.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,186 : 87,515 = 87,515 : x
  2. Step 2: Convert to fraction form
    40,186/87,515 = 87,515/x
  3. Step 3: Cross multiply
    40,186x = 87,515 × 87,515
  4. Step 4: Simplify right side
    40,186x = 7,658,875,225
  5. Step 5: Solve for x
    x = 7,658,875,225/40,186
  6. Step 6: Final answer
    x = 190,585.66

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.