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Finding the Third Proportional to 1,906.50 and 4,047

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Solution

The third proportional to 1,906.50 and 4,047 is: 8,590.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,906.50 : 4,047 = 4,047 : x
  2. Step 2: Convert to fraction form
    1,906.50/4,047 = 4,047/x
  3. Step 3: Cross multiply
    1,906.50x = 4,047 × 4,047
  4. Step 4: Simplify right side
    1,906.50x = 16,378,209
  5. Step 5: Solve for x
    x = 16,378,209/1,906.50
  6. Step 6: Final answer
    x = 8,590.72

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Why These Related Problems?

These problems maintain the same ratio (2.12) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.