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Finding the Third Proportional to 201,038.25 and 311,412.75

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Solution

The third proportional to 201,038.25 and 311,412.75 is: 482,385.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,038.25 : 311,412.75 = 311,412.75 : x
  2. Step 2: Convert to fraction form
    201,038.25/311,412.75 = 311,412.75/x
  3. Step 3: Cross multiply
    201,038.25x = 311,412.75 × 311,412.75
  4. Step 4: Simplify right side
    201,038.25x = 96,977,900,862.56
  5. Step 5: Solve for x
    x = 96,977,900,862.56/201,038.25
  6. Step 6: Final answer
    x = 482,385.32

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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.