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Finding the Fourth Proportional to 383,323.36, 528,989.70 and 211,247.50

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Solution

The fourth proportional to 383,323.36, 528,989.70 and 211,247.50 is: 291,523.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,323.36 : 528,989.70 = 211,247.50 : x
  2. Step 2: Convert to fraction form
    383,323.36/528,989.70 = 211,247.50/x
  3. Step 3: Cross multiply
    383,323.36x = 528,989.70 × 211,247.50
  4. Step 4: Simplify right side
    383,323.36x = 111,747,751,650.75
  5. Step 5: Solve for x
    x = 111,747,751,650.75/383,323.36
  6. Step 6: Final answer
    x = 291,523.46

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.