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Finding the Fourth Proportional to 303,861.60, 455,749.20 and 93,520.80

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Solution

The fourth proportional to 303,861.60, 455,749.20 and 93,520.80 is: 140,267.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,861.60 : 455,749.20 = 93,520.80 : x
  2. Step 2: Convert to fraction form
    303,861.60/455,749.20 = 93,520.80/x
  3. Step 3: Cross multiply
    303,861.60x = 455,749.20 × 93,520.80
  4. Step 4: Simplify right side
    303,861.60x = 42,622,029,783.36
  5. Step 5: Solve for x
    x = 42,622,029,783.36/303,861.60
  6. Step 6: Final answer
    x = 140,267.90

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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.