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Finding the Third Proportional to 1,925 and 4,021.50

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Solution

The third proportional to 1,925 and 4,021.50 is: 8,401.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,925 : 4,021.50 = 4,021.50 : x
  2. Step 2: Convert to fraction form
    1,925/4,021.50 = 4,021.50/x
  3. Step 3: Cross multiply
    1,925x = 4,021.50 × 4,021.50
  4. Step 4: Simplify right side
    1,925x = 16,172,462.25
  5. Step 5: Solve for x
    x = 16,172,462.25/1,925
  6. Step 6: Final answer
    x = 8,401.28

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Why These Related Problems?

These problems maintain the same ratio (2.09) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.