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Finding the Fourth Proportional to 474,366,902.99, 654,590,584.11 and 288,707,399.15

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Solution

The fourth proportional to 474,366,902.99, 654,590,584.11 and 288,707,399.15 is: 398,394,457.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    474,366,902.99 : 654,590,584.11 = 288,707,399.15 : x
  2. Step 2: Convert to fraction form
    474,366,902.99/654,590,584.11 = 288,707,399.15/x
  3. Step 3: Cross multiply
    474,366,902.99x = 654,590,584.11 × 288,707,399.15
  4. Step 4: Simplify right side
    474,366,902.99x = 188,985,145,043,204,448
  5. Step 5: Solve for x
    x = 188,985,145,043,204,448/474,366,902.99
  6. Step 6: Final answer
    x = 398,394,457.65

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.