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Finding the Fourth Proportional to 193,233.40, 289,850.10 and 81,040.30

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Solution

The fourth proportional to 193,233.40, 289,850.10 and 81,040.30 is: 121,560.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    193,233.40 : 289,850.10 = 81,040.30 : x
  2. Step 2: Convert to fraction form
    193,233.40/289,850.10 = 81,040.30/x
  3. Step 3: Cross multiply
    193,233.40x = 289,850.10 × 81,040.30
  4. Step 4: Simplify right side
    193,233.40x = 23,489,539,059.03
  5. Step 5: Solve for x
    x = 23,489,539,059.03/193,233.40
  6. Step 6: Final answer
    x = 121,560.45

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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.