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Finding the Fourth Proportional to 393,522.35, 543,058.34 and 223,756.47

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Solution

The fourth proportional to 393,522.35, 543,058.34 and 223,756.47 is: 308,782.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,522.35 : 543,058.34 = 223,756.47 : x
  2. Step 2: Convert to fraction form
    393,522.35/543,058.34 = 223,756.47/x
  3. Step 3: Cross multiply
    393,522.35x = 543,058.34 × 223,756.47
  4. Step 4: Simplify right side
    393,522.35x = 121,512,816,043.68
  5. Step 5: Solve for x
    x = 121,512,816,043.68/393,522.35
  6. Step 6: Final answer
    x = 308,782.51

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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.