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Finding the Fourth Proportional to 162,912.90, 244,369.35 and 143,229.90

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Solution

The fourth proportional to 162,912.90, 244,369.35 and 143,229.90 is: 214,844.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    162,912.90 : 244,369.35 = 143,229.90 : x
  2. Step 2: Convert to fraction form
    162,912.90/244,369.35 = 143,229.90/x
  3. Step 3: Cross multiply
    162,912.90x = 244,369.35 × 143,229.90
  4. Step 4: Simplify right side
    162,912.90x = 35,000,997,563.57
  5. Step 5: Solve for x
    x = 35,000,997,563.57/162,912.90
  6. Step 6: Final answer
    x = 214,844.85

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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.