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Finding the Third Proportional to 209,724.19 and 319,119.75

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Solution

The third proportional to 209,724.19 and 319,119.75 is: 485,577.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,724.19 : 319,119.75 = 319,119.75 : x
  2. Step 2: Convert to fraction form
    209,724.19/319,119.75 = 319,119.75/x
  3. Step 3: Cross multiply
    209,724.19x = 319,119.75 × 319,119.75
  4. Step 4: Simplify right side
    209,724.19x = 101,837,414,840.06
  5. Step 5: Solve for x
    x = 101,837,414,840.06/209,724.19
  6. Step 6: Final answer
    x = 485,577.83

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These problems maintain the same ratio (1.52) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.