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Finding the Fourth Proportional to 393,496.20, 590,393.34 and 235,837.80

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Solution

The fourth proportional to 393,496.20, 590,393.34 and 235,837.80 is: 353,846.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,496.20 : 590,393.34 = 235,837.80 : x
  2. Step 2: Convert to fraction form
    393,496.20/590,393.34 = 235,837.80/x
  3. Step 3: Cross multiply
    393,496.20x = 590,393.34 × 235,837.80
  4. Step 4: Simplify right side
    393,496.20x = 139,237,066,440.25
  5. Step 5: Solve for x
    x = 139,237,066,440.25/393,496.20
  6. Step 6: Final answer
    x = 353,846.03

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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.