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Finding the Fourth Proportional to 68,665.30, 103,064.54 and 33,151.66

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Solution

The fourth proportional to 68,665.30, 103,064.54 and 33,151.66 is: 49,759.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,665.30 : 103,064.54 = 33,151.66 : x
  2. Step 2: Convert to fraction form
    68,665.30/103,064.54 = 33,151.66/x
  3. Step 3: Cross multiply
    68,665.30x = 103,064.54 × 33,151.66
  4. Step 4: Simplify right side
    68,665.30x = 3,416,760,588.14
  5. Step 5: Solve for x
    x = 3,416,760,588.14/68,665.30
  6. Step 6: Final answer
    x = 49,759.64

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.