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Finding the Fourth Proportional to 397,316.70, 595,975.05 and 330,831.90

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Solution

The fourth proportional to 397,316.70, 595,975.05 and 330,831.90 is: 496,247.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,316.70 : 595,975.05 = 330,831.90 : x
  2. Step 2: Convert to fraction form
    397,316.70/595,975.05 = 330,831.90/x
  3. Step 3: Cross multiply
    397,316.70x = 595,975.05 × 330,831.90
  4. Step 4: Simplify right side
    397,316.70x = 197,167,558,144.10
  5. Step 5: Solve for x
    x = 197,167,558,144.10/397,316.70
  6. Step 6: Final answer
    x = 496,247.85

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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.