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Finding the Fourth Proportional to 603,613,880.80, 905,420,821.20 and 494,562,187.60

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Solution

The fourth proportional to 603,613,880.80, 905,420,821.20 and 494,562,187.60 is: 741,843,281.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    603,613,880.80 : 905,420,821.20 = 494,562,187.60 : x
  2. Step 2: Convert to fraction form
    603,613,880.80/905,420,821.20 = 494,562,187.60/x
  3. Step 3: Cross multiply
    603,613,880.80x = 905,420,821.20 × 494,562,187.60
  4. Step 4: Simplify right side
    603,613,880.80x = 447,786,902,031,260,480
  5. Step 5: Solve for x
    x = 447,786,902,031,260,480/603,613,880.80
  6. Step 6: Final answer
    x = 741,843,281.40

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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.