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Finding the Fourth Proportional to 212,546.57, 318,861.90 and 60,745.01

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Solution

The fourth proportional to 212,546.57, 318,861.90 and 60,745.01 is: 91,129.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,546.57 : 318,861.90 = 60,745.01 : x
  2. Step 2: Convert to fraction form
    212,546.57/318,861.90 = 60,745.01/x
  3. Step 3: Cross multiply
    212,546.57x = 318,861.90 × 60,745.01
  4. Step 4: Simplify right side
    212,546.57x = 19,369,267,709.81
  5. Step 5: Solve for x
    x = 19,369,267,709.81/212,546.57
  6. Step 6: Final answer
    x = 91,129.53

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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.