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Finding the Fourth Proportional to 393,528.17, 543,066.37 and 223,762.31

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Solution

The fourth proportional to 393,528.17, 543,066.37 and 223,762.31 is: 308,790.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,528.17 : 543,066.37 = 223,762.31 : x
  2. Step 2: Convert to fraction form
    393,528.17/543,066.37 = 223,762.31/x
  3. Step 3: Cross multiply
    393,528.17x = 543,066.37 × 223,762.31
  4. Step 4: Simplify right side
    393,528.17x = 121,517,785,434.52
  5. Step 5: Solve for x
    x = 121,517,785,434.52/393,528.17
  6. Step 6: Final answer
    x = 308,790.56

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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.