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Finding the Fourth Proportional to 68,917.16, 103,393.96 and 37,313.18

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Solution

The fourth proportional to 68,917.16, 103,393.96 and 37,313.18 is: 55,979.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,917.16 : 103,393.96 = 37,313.18 : x
  2. Step 2: Convert to fraction form
    68,917.16/103,393.96 = 37,313.18/x
  3. Step 3: Cross multiply
    68,917.16x = 103,393.96 × 37,313.18
  4. Step 4: Simplify right side
    68,917.16x = 3,857,957,440.39
  5. Step 5: Solve for x
    x = 3,857,957,440.39/68,917.16
  6. Step 6: Final answer
    x = 55,979.63

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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.