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Finding the Fourth Proportional to 393,527.43, 543,065.34 and 223,761.57

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Solution

The fourth proportional to 393,527.43, 543,065.34 and 223,761.57 is: 308,789.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,527.43 : 543,065.34 = 223,761.57 : x
  2. Step 2: Convert to fraction form
    393,527.43/543,065.34 = 223,761.57/x
  3. Step 3: Cross multiply
    393,527.43x = 543,065.34 × 223,761.57
  4. Step 4: Simplify right side
    393,527.43x = 121,517,149,256.85
  5. Step 5: Solve for x
    x = 121,517,149,256.85/393,527.43
  6. Step 6: Final answer
    x = 308,789.53

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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.