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Finding the Fourth Proportional to 665,903.40, 998,984.70 and 192,604.20

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Solution

The fourth proportional to 665,903.40, 998,984.70 and 192,604.20 is: 288,943.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,903.40 : 998,984.70 = 192,604.20 : x
  2. Step 2: Convert to fraction form
    665,903.40/998,984.70 = 192,604.20/x
  3. Step 3: Cross multiply
    665,903.40x = 998,984.70 × 192,604.20
  4. Step 4: Simplify right side
    665,903.40x = 192,408,648,955.74
  5. Step 5: Solve for x
    x = 192,408,648,955.74/665,903.40
  6. Step 6: Final answer
    x = 288,943.79

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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.