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Finding the Fourth Proportional to 393,530.47, 543,022.18 and 223,768.24

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Solution

The fourth proportional to 393,530.47, 543,022.18 and 223,768.24 is: 308,771.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,530.47 : 543,022.18 = 223,768.24 : x
  2. Step 2: Convert to fraction form
    393,530.47/543,022.18 = 223,768.24/x
  3. Step 3: Cross multiply
    393,530.47x = 543,022.18 × 223,768.24
  4. Step 4: Simplify right side
    393,530.47x = 121,511,117,499.56
  5. Step 5: Solve for x
    x = 121,511,117,499.56/393,530.47
  6. Step 6: Final answer
    x = 308,771.82

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1.5x scale

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.