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Finding the Fourth Proportional to 73,787.94, 110,698.32 and 21,193.38

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Solution

The fourth proportional to 73,787.94, 110,698.32 and 21,193.38 is: 31,794.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,787.94 : 110,698.32 = 21,193.38 : x
  2. Step 2: Convert to fraction form
    73,787.94/110,698.32 = 21,193.38/x
  3. Step 3: Cross multiply
    73,787.94x = 110,698.32 × 21,193.38
  4. Step 4: Simplify right side
    73,787.94x = 2,346,071,561.12
  5. Step 5: Solve for x
    x = 2,346,071,561.12/73,787.94
  6. Step 6: Final answer
    x = 31,794.78

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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.