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Finding the Fourth Proportional to 120,909.98, 166,852.44 and 67,193.64

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Solution

The fourth proportional to 120,909.98, 166,852.44 and 67,193.64 is: 92,725.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,909.98 : 166,852.44 = 67,193.64 : x
  2. Step 2: Convert to fraction form
    120,909.98/166,852.44 = 67,193.64/x
  3. Step 3: Cross multiply
    120,909.98x = 166,852.44 × 67,193.64
  4. Step 4: Simplify right side
    120,909.98x = 11,211,422,786.48
  5. Step 5: Solve for x
    x = 11,211,422,786.48/120,909.98
  6. Step 6: Final answer
    x = 92,725.37

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.