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Finding the Fourth Proportional to 73,161.60, 109,676.70 and 28,818.60

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Solution

The fourth proportional to 73,161.60, 109,676.70 and 28,818.60 is: 43,202.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,161.60 : 109,676.70 = 28,818.60 : x
  2. Step 2: Convert to fraction form
    73,161.60/109,676.70 = 28,818.60/x
  3. Step 3: Cross multiply
    73,161.60x = 109,676.70 × 28,818.60
  4. Step 4: Simplify right side
    73,161.60x = 3,160,728,946.62
  5. Step 5: Solve for x
    x = 3,160,728,946.62/73,161.60
  6. Step 6: Final answer
    x = 43,202.02

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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.