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Finding the Fourth Proportional to 169,928.80, 255,087.60 and 99,847.60

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Solution

The fourth proportional to 169,928.80, 255,087.60 and 99,847.60 is: 149,885.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,928.80 : 255,087.60 = 99,847.60 : x
  2. Step 2: Convert to fraction form
    169,928.80/255,087.60 = 99,847.60/x
  3. Step 3: Cross multiply
    169,928.80x = 255,087.60 × 99,847.60
  4. Step 4: Simplify right side
    169,928.80x = 25,469,884,649.76
  5. Step 5: Solve for x
    x = 25,469,884,649.76/169,928.80
  6. Step 6: Final answer
    x = 149,885.63

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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.