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Finding the Fourth Proportional to 73,123.20, 109,611.90 and 33,611.40

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Solution

The fourth proportional to 73,123.20, 109,611.90 and 33,611.40 is: 50,383.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,123.20 : 109,611.90 = 33,611.40 : x
  2. Step 2: Convert to fraction form
    73,123.20/109,611.90 = 33,611.40/x
  3. Step 3: Cross multiply
    73,123.20x = 109,611.90 × 33,611.40
  4. Step 4: Simplify right side
    73,123.20x = 3,684,209,415.66
  5. Step 5: Solve for x
    x = 3,684,209,415.66/73,123.20
  6. Step 6: Final answer
    x = 50,383.59

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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.