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Finding the Fourth Proportional to 321,843.60, 482,880.60 and 134,912.40

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Solution

The fourth proportional to 321,843.60, 482,880.60 and 134,912.40 is: 202,416.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,843.60 : 482,880.60 = 134,912.40 : x
  2. Step 2: Convert to fraction form
    321,843.60/482,880.60 = 134,912.40/x
  3. Step 3: Cross multiply
    321,843.60x = 482,880.60 × 134,912.40
  4. Step 4: Simplify right side
    321,843.60x = 65,146,580,659.44
  5. Step 5: Solve for x
    x = 65,146,580,659.44/321,843.60
  6. Step 6: Final answer
    x = 202,416.89

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.