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Finding the Fourth Proportional to 193,241.40, 289,862.10 and 80,902.20

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Solution

The fourth proportional to 193,241.40, 289,862.10 and 80,902.20 is: 121,353.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    193,241.40 : 289,862.10 = 80,902.20 : x
  2. Step 2: Convert to fraction form
    193,241.40/289,862.10 = 80,902.20/x
  3. Step 3: Cross multiply
    193,241.40x = 289,862.10 × 80,902.20
  4. Step 4: Simplify right side
    193,241.40x = 23,450,481,586.62
  5. Step 5: Solve for x
    x = 23,450,481,586.62/193,241.40
  6. Step 6: Final answer
    x = 121,353.30

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1.5x scale

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.