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Finding the Fourth Proportional to 192,915.60, 289,330.20 and 126,819.60

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Solution

The fourth proportional to 192,915.60, 289,330.20 and 126,819.60 is: 190,201.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,915.60 : 289,330.20 = 126,819.60 : x
  2. Step 2: Convert to fraction form
    192,915.60/289,330.20 = 126,819.60/x
  3. Step 3: Cross multiply
    192,915.60x = 289,330.20 × 126,819.60
  4. Step 4: Simplify right side
    192,915.60x = 36,692,740,231.92
  5. Step 5: Solve for x
    x = 36,692,740,231.92/192,915.60
  6. Step 6: Final answer
    x = 190,201.00

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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.