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Finding the Fourth Proportional to 321,846.60, 482,769.90 and 134,838.60

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Solution

The fourth proportional to 321,846.60, 482,769.90 and 134,838.60 is: 202,257.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,846.60 : 482,769.90 = 134,838.60 : x
  2. Step 2: Convert to fraction form
    321,846.60/482,769.90 = 134,838.60/x
  3. Step 3: Cross multiply
    321,846.60x = 482,769.90 × 134,838.60
  4. Step 4: Simplify right side
    321,846.60x = 65,096,017,438.14
  5. Step 5: Solve for x
    x = 65,096,017,438.14/321,846.60
  6. Step 6: Final answer
    x = 202,257.90

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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.