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Finding the Fourth Proportional to 351,145.99, 484,578 and 189,997.50

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Solution

The fourth proportional to 351,145.99, 484,578 and 189,997.50 is: 262,194.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,145.99 : 484,578 = 189,997.50 : x
  2. Step 2: Convert to fraction form
    351,145.99/484,578 = 189,997.50/x
  3. Step 3: Cross multiply
    351,145.99x = 484,578 × 189,997.50
  4. Step 4: Simplify right side
    351,145.99x = 92,068,608,555
  5. Step 5: Solve for x
    x = 92,068,608,555/351,145.99
  6. Step 6: Final answer
    x = 262,194.67

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.