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Finding the Third Proportional to 393,886 and 859,064

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Solution

The third proportional to 393,886 and 859,064 is: 1,873,615.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,886 : 859,064 = 859,064 : x
  2. Step 2: Convert to fraction form
    393,886/859,064 = 859,064/x
  3. Step 3: Cross multiply
    393,886x = 859,064 × 859,064
  4. Step 4: Simplify right side
    393,886x = 737,990,956,096
  5. Step 5: Solve for x
    x = 737,990,956,096/393,886
  6. Step 6: Final answer
    x = 1,873,615.60

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.