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Finding the Fourth Proportional to 68,674.97, 103,042.05 and 37,078.76

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Solution

The fourth proportional to 68,674.97, 103,042.05 and 37,078.76 is: 55,634.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,674.97 : 103,042.05 = 37,078.76 : x
  2. Step 2: Convert to fraction form
    68,674.97/103,042.05 = 37,078.76/x
  3. Step 3: Cross multiply
    68,674.97x = 103,042.05 × 37,078.76
  4. Step 4: Simplify right side
    68,674.97x = 3,820,670,926.65
  5. Step 5: Solve for x
    x = 3,820,670,926.65/68,674.97
  6. Step 6: Final answer
    x = 55,634.12

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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.