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Finding the Fourth Proportional to 68,976.11, 103,411.71 and 35,674.97

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Solution

The fourth proportional to 68,976.11, 103,411.71 and 35,674.97 is: 53,485.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,976.11 : 103,411.71 = 35,674.97 : x
  2. Step 2: Convert to fraction form
    68,976.11/103,411.71 = 35,674.97/x
  3. Step 3: Cross multiply
    68,976.11x = 103,411.71 × 35,674.97
  4. Step 4: Simplify right side
    68,976.11x = 3,689,209,134.84
  5. Step 5: Solve for x
    x = 3,689,209,134.84/68,976.11
  6. Step 6: Final answer
    x = 53,485.32

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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.