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Finding the Fourth Proportional to 74,794.65, 103,006.62 and 73,161.69

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Solution

The fourth proportional to 74,794.65, 103,006.62 and 73,161.69 is: 100,757.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,794.65 : 103,006.62 = 73,161.69 : x
  2. Step 2: Convert to fraction form
    74,794.65/103,006.62 = 73,161.69/x
  3. Step 3: Cross multiply
    74,794.65x = 103,006.62 × 73,161.69
  4. Step 4: Simplify right side
    74,794.65x = 7,536,138,400.39
  5. Step 5: Solve for x
    x = 7,536,138,400.39/74,794.65
  6. Step 6: Final answer
    x = 100,757.72

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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.