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Finding the Fourth Proportional to 392,684.40, 589,026.60 and 193,035.60

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Solution

The fourth proportional to 392,684.40, 589,026.60 and 193,035.60 is: 289,553.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,684.40 : 589,026.60 = 193,035.60 : x
  2. Step 2: Convert to fraction form
    392,684.40/589,026.60 = 193,035.60/x
  3. Step 3: Cross multiply
    392,684.40x = 589,026.60 × 193,035.60
  4. Step 4: Simplify right side
    392,684.40x = 113,703,103,146.96
  5. Step 5: Solve for x
    x = 113,703,103,146.96/392,684.40
  6. Step 6: Final answer
    x = 289,553.40

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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.