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Finding the Fourth Proportional to 192,892.80, 289,425.60 and 87,657.60

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Solution

The fourth proportional to 192,892.80, 289,425.60 and 87,657.60 is: 131,525.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,892.80 : 289,425.60 = 87,657.60 : x
  2. Step 2: Convert to fraction form
    192,892.80/289,425.60 = 87,657.60/x
  3. Step 3: Cross multiply
    192,892.80x = 289,425.60 × 87,657.60
  4. Step 4: Simplify right side
    192,892.80x = 25,370,353,474.56
  5. Step 5: Solve for x
    x = 25,370,353,474.56/192,892.80
  6. Step 6: Final answer
    x = 131,525.66

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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.