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Finding the Fourth Proportional to 68,573.25, 102,792.39 and 40,074.03

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Solution

The fourth proportional to 68,573.25, 102,792.39 and 40,074.03 is: 60,071.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,573.25 : 102,792.39 = 40,074.03 : x
  2. Step 2: Convert to fraction form
    68,573.25/102,792.39 = 40,074.03/x
  3. Step 3: Cross multiply
    68,573.25x = 102,792.39 × 40,074.03
  4. Step 4: Simplify right side
    68,573.25x = 4,119,305,320.63
  5. Step 5: Solve for x
    x = 4,119,305,320.63/68,573.25
  6. Step 6: Final answer
    x = 60,071.61

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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.