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Finding the Fourth Proportional to 73,787.85, 110,698.17 and 21,193.32

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Solution

The fourth proportional to 73,787.85, 110,698.17 and 21,193.32 is: 31,794.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,787.85 : 110,698.17 = 21,193.32 : x
  2. Step 2: Convert to fraction form
    73,787.85/110,698.17 = 21,193.32/x
  3. Step 3: Cross multiply
    73,787.85x = 110,698.17 × 21,193.32
  4. Step 4: Simplify right side
    73,787.85x = 2,346,061,740.22
  5. Step 5: Solve for x
    x = 2,346,061,740.22/73,787.85
  6. Step 6: Final answer
    x = 31,794.69

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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.