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Finding the Fourth Proportional to 129,311.89, 193,967.82 and 35,817.64

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Solution

The fourth proportional to 129,311.89, 193,967.82 and 35,817.64 is: 53,726.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,311.89 : 193,967.82 = 35,817.64 : x
  2. Step 2: Convert to fraction form
    129,311.89/193,967.82 = 35,817.64/x
  3. Step 3: Cross multiply
    129,311.89x = 193,967.82 × 35,817.64
  4. Step 4: Simplify right side
    129,311.89x = 6,947,469,548.34
  5. Step 5: Solve for x
    x = 6,947,469,548.34/129,311.89
  6. Step 6: Final answer
    x = 53,726.46

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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.