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Finding the Third Proportional to 3,148 and 6,911.50

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Solution

The third proportional to 3,148 and 6,911.50 is: 15,174.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,148 : 6,911.50 = 6,911.50 : x
  2. Step 2: Convert to fraction form
    3,148/6,911.50 = 6,911.50/x
  3. Step 3: Cross multiply
    3,148x = 6,911.50 × 6,911.50
  4. Step 4: Simplify right side
    3,148x = 47,768,832.25
  5. Step 5: Solve for x
    x = 47,768,832.25/3,148
  6. Step 6: Final answer
    x = 15,174.34

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Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.