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Finding the Fourth Proportional to 68,760.90, 103,055.22 and 37,169.82

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Solution

The fourth proportional to 68,760.90, 103,055.22 and 37,169.82 is: 55,708.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,760.90 : 103,055.22 = 37,169.82 : x
  2. Step 2: Convert to fraction form
    68,760.90/103,055.22 = 37,169.82/x
  3. Step 3: Cross multiply
    68,760.90x = 103,055.22 × 37,169.82
  4. Step 4: Simplify right side
    68,760.90x = 3,830,543,977.46
  5. Step 5: Solve for x
    x = 3,830,543,977.46/68,760.90
  6. Step 6: Final answer
    x = 55,708.17

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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.