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Finding the Third Proportional to 399,636.28 and 863,244.84

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Solution

The third proportional to 399,636.28 and 863,244.84 is: 1,864,674.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,636.28 : 863,244.84 = 863,244.84 : x
  2. Step 2: Convert to fraction form
    399,636.28/863,244.84 = 863,244.84/x
  3. Step 3: Cross multiply
    399,636.28x = 863,244.84 × 863,244.84
  4. Step 4: Simplify right side
    399,636.28x = 745,191,660,260.96
  5. Step 5: Solve for x
    x = 745,191,660,260.96/399,636.28
  6. Step 6: Final answer
    x = 1,864,674.69

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These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.