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Finding the Fourth Proportional to 624,529.20, 936,563.40 and 203,818.80

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Solution

The fourth proportional to 624,529.20, 936,563.40 and 203,818.80 is: 305,653.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    624,529.20 : 936,563.40 = 203,818.80 : x
  2. Step 2: Convert to fraction form
    624,529.20/936,563.40 = 203,818.80/x
  3. Step 3: Cross multiply
    624,529.20x = 936,563.40 × 203,818.80
  4. Step 4: Simplify right side
    624,529.20x = 190,889,228,311.92
  5. Step 5: Solve for x
    x = 190,889,228,311.92/624,529.20
  6. Step 6: Final answer
    x = 305,653.01

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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.