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Finding the Fourth Proportional to 403,818.60, 605,071.80 and 336,896.40

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Solution

The fourth proportional to 403,818.60, 605,071.80 and 336,896.40 is: 504,797.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,818.60 : 605,071.80 = 336,896.40 : x
  2. Step 2: Convert to fraction form
    403,818.60/605,071.80 = 336,896.40/x
  3. Step 3: Cross multiply
    403,818.60x = 605,071.80 × 336,896.40
  4. Step 4: Simplify right side
    403,818.60x = 203,846,511,161.52
  5. Step 5: Solve for x
    x = 203,846,511,161.52/403,818.60
  6. Step 6: Final answer
    x = 504,797.23

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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.