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Finding the Fourth Proportional to 73,187.46, 100,998.66 and 39,653.46

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Solution

The fourth proportional to 73,187.46, 100,998.66 and 39,653.46 is: 54,721.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,187.46 : 100,998.66 = 39,653.46 : x
  2. Step 2: Convert to fraction form
    73,187.46/100,998.66 = 39,653.46/x
  3. Step 3: Cross multiply
    73,187.46x = 100,998.66 × 39,653.46
  4. Step 4: Simplify right side
    73,187.46x = 4,004,946,324.36
  5. Step 5: Solve for x
    x = 4,004,946,324.36/73,187.46
  6. Step 6: Final answer
    x = 54,721.76

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.