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Finding the Fourth Proportional to 451,919,813.80, 677,942,706.30 and 193,132,978.60

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Solution

The fourth proportional to 451,919,813.80, 677,942,706.30 and 193,132,978.60 is: 289,726,385.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    451,919,813.80 : 677,942,706.30 = 193,132,978.60 : x
  2. Step 2: Convert to fraction form
    451,919,813.80/677,942,706.30 = 193,132,978.60/x
  3. Step 3: Cross multiply
    451,919,813.80x = 677,942,706.30 × 193,132,978.60
  4. Step 4: Simplify right side
    451,919,813.80x = 130,933,094,187,863,968
  5. Step 5: Solve for x
    x = 130,933,094,187,863,968/451,919,813.80
  6. Step 6: Final answer
    x = 289,726,385.50

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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.