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Finding the Fourth Proportional to 268,979,216.80, 403,468,825.20 and 268,979,216.80

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Solution

The fourth proportional to 268,979,216.80, 403,468,825.20 and 268,979,216.80 is: 403,468,825.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,979,216.80 : 403,468,825.20 = 268,979,216.80 : x
  2. Step 2: Convert to fraction form
    268,979,216.80/403,468,825.20 = 268,979,216.80/x
  3. Step 3: Cross multiply
    268,979,216.80x = 403,468,825.20 × 268,979,216.80
  4. Step 4: Simplify right side
    268,979,216.80x = 108,524,728,605,512,112
  5. Step 5: Solve for x
    x = 108,524,728,605,512,112/268,979,216.80
  6. Step 6: Final answer
    x = 403,468,825.20

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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.