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Finding the Fourth Proportional to 273,211.40, 409,638.90 and 245,217.80

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Solution

The fourth proportional to 273,211.40, 409,638.90 and 245,217.80 is: 367,666.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    273,211.40 : 409,638.90 = 245,217.80 : x
  2. Step 2: Convert to fraction form
    273,211.40/409,638.90 = 245,217.80/x
  3. Step 3: Cross multiply
    273,211.40x = 409,638.90 × 245,217.80
  4. Step 4: Simplify right side
    273,211.40x = 100,450,749,852.42
  5. Step 5: Solve for x
    x = 100,450,749,852.42/273,211.40
  6. Step 6: Final answer
    x = 367,666.76

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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.