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Finding the Fourth Proportional to 443,489.10, 665,087.85 and 162,969.90

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Solution

The fourth proportional to 443,489.10, 665,087.85 and 162,969.90 is: 244,401.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,489.10 : 665,087.85 = 162,969.90 : x
  2. Step 2: Convert to fraction form
    443,489.10/665,087.85 = 162,969.90/x
  3. Step 3: Cross multiply
    443,489.10x = 665,087.85 × 162,969.90
  4. Step 4: Simplify right side
    443,489.10x = 108,389,300,405.72
  5. Step 5: Solve for x
    x = 108,389,300,405.72/443,489.10
  6. Step 6: Final answer
    x = 244,401.27

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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.