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Finding the Third Proportional to 399,497.25 and 858,285.75

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Solution

The third proportional to 399,497.25 and 858,285.75 is: 1,843,953.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,497.25 : 858,285.75 = 858,285.75 : x
  2. Step 2: Convert to fraction form
    399,497.25/858,285.75 = 858,285.75/x
  3. Step 3: Cross multiply
    399,497.25x = 858,285.75 × 858,285.75
  4. Step 4: Simplify right side
    399,497.25x = 736,654,428,653.06
  5. Step 5: Solve for x
    x = 736,654,428,653.06/399,497.25
  6. Step 6: Final answer
    x = 1,843,953.69

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