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Finding the Fourth Proportional to 355,611.21, 533,469.87 and 130,954.38

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Solution

The fourth proportional to 355,611.21, 533,469.87 and 130,954.38 is: 196,451.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,611.21 : 533,469.87 = 130,954.38 : x
  2. Step 2: Convert to fraction form
    355,611.21/533,469.87 = 130,954.38/x
  3. Step 3: Cross multiply
    355,611.21x = 533,469.87 × 130,954.38
  4. Step 4: Simplify right side
    355,611.21x = 69,860,216,074.53
  5. Step 5: Solve for x
    x = 69,860,216,074.53/355,611.21
  6. Step 6: Final answer
    x = 196,451.11

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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.