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Finding the Fourth Proportional to 273,228.20, 409,404.90 and 173,209.40

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Solution

The fourth proportional to 273,228.20, 409,404.90 and 173,209.40 is: 259,536.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    273,228.20 : 409,404.90 = 173,209.40 : x
  2. Step 2: Convert to fraction form
    273,228.20/409,404.90 = 173,209.40/x
  3. Step 3: Cross multiply
    273,228.20x = 409,404.90 × 173,209.40
  4. Step 4: Simplify right side
    273,228.20x = 70,912,777,086.06
  5. Step 5: Solve for x
    x = 70,912,777,086.06/273,228.20
  6. Step 6: Final answer
    x = 259,536.82

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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.