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Finding the Fourth Proportional to 198,656,276.80, 297,984,415.20 and 198,656,276.80

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Solution

The fourth proportional to 198,656,276.80, 297,984,415.20 and 198,656,276.80 is: 297,984,415.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,656,276.80 : 297,984,415.20 = 198,656,276.80 : x
  2. Step 2: Convert to fraction form
    198,656,276.80/297,984,415.20 = 198,656,276.80/x
  3. Step 3: Cross multiply
    198,656,276.80x = 297,984,415.20 × 198,656,276.80
  4. Step 4: Simplify right side
    198,656,276.80x = 59,196,474,468,057,328
  5. Step 5: Solve for x
    x = 59,196,474,468,057,328/198,656,276.80
  6. Step 6: Final answer
    x = 297,984,415.20

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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.