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Finding the Third Proportional to 1,931 and 4,467.50

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Solution

The third proportional to 1,931 and 4,467.50 is: 10,335.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,931 : 4,467.50 = 4,467.50 : x
  2. Step 2: Convert to fraction form
    1,931/4,467.50 = 4,467.50/x
  3. Step 3: Cross multiply
    1,931x = 4,467.50 × 4,467.50
  4. Step 4: Simplify right side
    1,931x = 19,958,556.25
  5. Step 5: Solve for x
    x = 19,958,556.25/1,931
  6. Step 6: Final answer
    x = 10,335.87

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Why These Related Problems?

These problems maintain the same ratio (2.31) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.