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Finding the Fourth Proportional to 603,305.58, 905,069.52 and 198,520.50

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Solution

The fourth proportional to 603,305.58, 905,069.52 and 198,520.50 is: 297,817.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    603,305.58 : 905,069.52 = 198,520.50 : x
  2. Step 2: Convert to fraction form
    603,305.58/905,069.52 = 198,520.50/x
  3. Step 3: Cross multiply
    603,305.58x = 905,069.52 × 198,520.50
  4. Step 4: Simplify right side
    603,305.58x = 179,674,853,645.16
  5. Step 5: Solve for x
    x = 179,674,853,645.16/603,305.58
  6. Step 6: Final answer
    x = 297,817.32

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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.