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Finding the Fourth Proportional to 365,865.72, 548,483.21 and 141,383.67

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Solution

The fourth proportional to 365,865.72, 548,483.21 and 141,383.67 is: 211,953.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    365,865.72 : 548,483.21 = 141,383.67 : x
  2. Step 2: Convert to fraction form
    365,865.72/548,483.21 = 141,383.67/x
  3. Step 3: Cross multiply
    365,865.72x = 548,483.21 × 141,383.67
  4. Step 4: Simplify right side
    365,865.72x = 77,546,569,163.18
  5. Step 5: Solve for x
    x = 77,546,569,163.18/365,865.72
  6. Step 6: Final answer
    x = 211,953.63

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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.