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Finding the Fourth Proportional to 422,121, 582,527.04 and 243,273

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Solution

The fourth proportional to 422,121, 582,527.04 and 243,273 is: 335,716.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    422,121 : 582,527.04 = 243,273 : x
  2. Step 2: Convert to fraction form
    422,121/582,527.04 = 243,273/x
  3. Step 3: Cross multiply
    422,121x = 582,527.04 × 243,273
  4. Step 4: Simplify right side
    422,121x = 141,713,100,601.92
  5. Step 5: Solve for x
    x = 141,713,100,601.92/422,121
  6. Step 6: Final answer
    x = 335,716.77

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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.