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Finding the Third Proportional to 995.50 and 2,091

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Solution

The third proportional to 995.50 and 2,091 is: 4,392.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    995.50 : 2,091 = 2,091 : x
  2. Step 2: Convert to fraction form
    995.50/2,091 = 2,091/x
  3. Step 3: Cross multiply
    995.50x = 2,091 × 2,091
  4. Step 4: Simplify right side
    995.50x = 4,372,281
  5. Step 5: Solve for x
    x = 4,372,281/995.50
  6. Step 6: Final answer
    x = 4,392.05

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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.