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Finding the Fourth Proportional to 129,358.60, 194,069.94 and 61,941.94

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Solution

The fourth proportional to 129,358.60, 194,069.94 and 61,941.94 is: 92,928.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,358.60 : 194,069.94 = 61,941.94 : x
  2. Step 2: Convert to fraction form
    129,358.60/194,069.94 = 61,941.94/x
  3. Step 3: Cross multiply
    129,358.60x = 194,069.94 × 61,941.94
  4. Step 4: Simplify right side
    129,358.60x = 12,021,068,579.28
  5. Step 5: Solve for x
    x = 12,021,068,579.28/129,358.60
  6. Step 6: Final answer
    x = 92,928.25

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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.