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Finding the Third Proportional to 995 and 1,915

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Solution

The third proportional to 995 and 1,915 is: 3,685.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    995 : 1,915 = 1,915 : x
  2. Step 2: Convert to fraction form
    995/1,915 = 1,915/x
  3. Step 3: Cross multiply
    995x = 1,915 × 1,915
  4. Step 4: Simplify right side
    995x = 3,667,225
  5. Step 5: Solve for x
    x = 3,667,225/995
  6. Step 6: Final answer
    x = 3,685.65

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Why These Related Problems?

These problems maintain the same ratio (1.92) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.