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Finding the Third Proportional to 145,320.75 and 213,198.75

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Solution

The third proportional to 145,320.75 and 213,198.75 is: 312,781.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,320.75 : 213,198.75 = 213,198.75 : x
  2. Step 2: Convert to fraction form
    145,320.75/213,198.75 = 213,198.75/x
  3. Step 3: Cross multiply
    145,320.75x = 213,198.75 × 213,198.75
  4. Step 4: Simplify right side
    145,320.75x = 45,453,707,001.56
  5. Step 5: Solve for x
    x = 45,453,707,001.56/145,320.75
  6. Step 6: Final answer
    x = 312,781.95

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These problems maintain the same ratio (1.47) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.