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Finding the Third Proportional to 203,938.88 and 315,132.75

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Solution

The third proportional to 203,938.88 and 315,132.75 is: 486,953.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,938.88 : 315,132.75 = 315,132.75 : x
  2. Step 2: Convert to fraction form
    203,938.88/315,132.75 = 315,132.75/x
  3. Step 3: Cross multiply
    203,938.88x = 315,132.75 × 315,132.75
  4. Step 4: Simplify right side
    203,938.88x = 99,308,650,122.56
  5. Step 5: Solve for x
    x = 99,308,650,122.56/203,938.88
  6. Step 6: Final answer
    x = 486,953.02

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These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.