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Finding the Third Proportional to 901.75 and 1,938.50

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Solution

The third proportional to 901.75 and 1,938.50 is: 4,167.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    901.75 : 1,938.50 = 1,938.50 : x
  2. Step 2: Convert to fraction form
    901.75/1,938.50 = 1,938.50/x
  3. Step 3: Cross multiply
    901.75x = 1,938.50 × 1,938.50
  4. Step 4: Simplify right side
    901.75x = 3,757,782.25
  5. Step 5: Solve for x
    x = 3,757,782.25/901.75
  6. Step 6: Final answer
    x = 4,167.21

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.