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Finding the Third Proportional to 31,835.53 and 68,561.44

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Solution

The third proportional to 31,835.53 and 68,561.44 is: 147,654.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,835.53 : 68,561.44 = 68,561.44 : x
  2. Step 2: Convert to fraction form
    31,835.53/68,561.44 = 68,561.44/x
  3. Step 3: Cross multiply
    31,835.53x = 68,561.44 × 68,561.44
  4. Step 4: Simplify right side
    31,835.53x = 4,700,670,712.07
  5. Step 5: Solve for x
    x = 4,700,670,712.07/31,835.53
  6. Step 6: Final answer
    x = 147,654.85

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Why These Related Problems?

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