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Finding the Fourth Proportional to 73,216.98, 109,783.83 and 28,819.66

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Solution

The fourth proportional to 73,216.98, 109,783.83 and 28,819.66 is: 43,213.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,216.98 : 109,783.83 = 28,819.66 : x
  2. Step 2: Convert to fraction form
    73,216.98/109,783.83 = 28,819.66/x
  3. Step 3: Cross multiply
    73,216.98x = 109,783.83 × 28,819.66
  4. Step 4: Simplify right side
    73,216.98x = 3,163,932,654.10
  5. Step 5: Solve for x
    x = 3,163,932,654.10/73,216.98
  6. Step 6: Final answer
    x = 43,213.10

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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.