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Finding the Fourth Proportional to 398,623.36, 550,079.37 and 226,518.30

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Solution

The fourth proportional to 398,623.36, 550,079.37 and 226,518.30 is: 312,583.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,623.36 : 550,079.37 = 226,518.30 : x
  2. Step 2: Convert to fraction form
    398,623.36/550,079.37 = 226,518.30/x
  3. Step 3: Cross multiply
    398,623.36x = 550,079.37 × 226,518.30
  4. Step 4: Simplify right side
    398,623.36x = 124,603,043,757.47
  5. Step 5: Solve for x
    x = 124,603,043,757.47/398,623.36
  6. Step 6: Final answer
    x = 312,583.40

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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.