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Finding the Third Proportional to 3,356.25 and 4,890

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Solution

The third proportional to 3,356.25 and 4,890 is: 7,124.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,356.25 : 4,890 = 4,890 : x
  2. Step 2: Convert to fraction form
    3,356.25/4,890 = 4,890/x
  3. Step 3: Cross multiply
    3,356.25x = 4,890 × 4,890
  4. Step 4: Simplify right side
    3,356.25x = 23,912,100
  5. Step 5: Solve for x
    x = 23,912,100/3,356.25
  6. Step 6: Final answer
    x = 7,124.65

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Why These Related Problems?

These problems maintain the same ratio (1.46) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.