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Finding the Third Proportional to 392,342.06 and 555,315.75

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Solution

The third proportional to 392,342.06 and 555,315.75 is: 785,986.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,342.06 : 555,315.75 = 555,315.75 : x
  2. Step 2: Convert to fraction form
    392,342.06/555,315.75 = 555,315.75/x
  3. Step 3: Cross multiply
    392,342.06x = 555,315.75 × 555,315.75
  4. Step 4: Simplify right side
    392,342.06x = 308,375,582,198.06
  5. Step 5: Solve for x
    x = 308,375,582,198.06/392,342.06
  6. Step 6: Final answer
    x = 785,986.55

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These problems maintain the same ratio (1.42) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.