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Finding the Fourth Proportional to 603,419.40, 905,712.30 and 367,223.40

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Solution

The fourth proportional to 603,419.40, 905,712.30 and 367,223.40 is: 551,190.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    603,419.40 : 905,712.30 = 367,223.40 : x
  2. Step 2: Convert to fraction form
    603,419.40/905,712.30 = 367,223.40/x
  3. Step 3: Cross multiply
    603,419.40x = 905,712.30 × 367,223.40
  4. Step 4: Simplify right side
    603,419.40x = 332,598,750,227.82
  5. Step 5: Solve for x
    x = 332,598,750,227.82/603,419.40
  6. Step 6: Final answer
    x = 551,190.02

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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.