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Finding the Fourth Proportional to 393,532.36, 543,072.12 and 223,766.47

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Solution

The fourth proportional to 393,532.36, 543,072.12 and 223,766.47 is: 308,796.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,532.36 : 543,072.12 = 223,766.47 : x
  2. Step 2: Convert to fraction form
    393,532.36/543,072.12 = 223,766.47/x
  3. Step 3: Cross multiply
    393,532.36x = 543,072.12 × 223,766.47
  4. Step 4: Simplify right side
    393,532.36x = 121,521,331,247.82
  5. Step 5: Solve for x
    x = 121,521,331,247.82/393,532.36
  6. Step 6: Final answer
    x = 308,796.29

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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.