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Finding the Fourth Proportional to 654,917,900.94, 980,810,752.92 and 377,728,754.49

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Solution

The fourth proportional to 654,917,900.94, 980,810,752.92 and 377,728,754.49 is: 565,689,872.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    654,917,900.94 : 980,810,752.92 = 377,728,754.49 : x
  2. Step 2: Convert to fraction form
    654,917,900.94/980,810,752.92 = 377,728,754.49/x
  3. Step 3: Cross multiply
    654,917,900.94x = 980,810,752.92 × 377,728,754.49
  4. Step 4: Simplify right side
    654,917,900.94x = 370,480,424,090,870,720
  5. Step 5: Solve for x
    x = 370,480,424,090,870,720/654,917,900.94
  6. Step 6: Final answer
    x = 565,689,872.82

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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.