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Finding the Fourth Proportional to 129,367.64, 194,059.65 and 40,624.64

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Solution

The fourth proportional to 129,367.64, 194,059.65 and 40,624.64 is: 60,939.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,367.64 : 194,059.65 = 40,624.64 : x
  2. Step 2: Convert to fraction form
    129,367.64/194,059.65 = 40,624.64/x
  3. Step 3: Cross multiply
    129,367.64x = 194,059.65 × 40,624.64
  4. Step 4: Simplify right side
    129,367.64x = 7,883,603,419.78
  5. Step 5: Solve for x
    x = 7,883,603,419.78/129,367.64
  6. Step 6: Final answer
    x = 60,939.53

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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.