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Finding the Fourth Proportional to 492,716.60, 739,269.30 and 193,146.20

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Solution

The fourth proportional to 492,716.60, 739,269.30 and 193,146.20 is: 289,795.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,716.60 : 739,269.30 = 193,146.20 : x
  2. Step 2: Convert to fraction form
    492,716.60/739,269.30 = 193,146.20/x
  3. Step 3: Cross multiply
    492,716.60x = 739,269.30 × 193,146.20
  4. Step 4: Simplify right side
    492,716.60x = 142,787,056,071.66
  5. Step 5: Solve for x
    x = 142,787,056,071.66/492,716.60
  6. Step 6: Final answer
    x = 289,795.51

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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.