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Finding the Fourth Proportional to 303,387.79, 418,494.76 and 196,021.13

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Solution

The fourth proportional to 303,387.79, 418,494.76 and 196,021.13 is: 270,392.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,387.79 : 418,494.76 = 196,021.13 : x
  2. Step 2: Convert to fraction form
    303,387.79/418,494.76 = 196,021.13/x
  3. Step 3: Cross multiply
    303,387.79x = 418,494.76 × 196,021.13
  4. Step 4: Simplify right side
    303,387.79x = 82,033,815,754.28
  5. Step 5: Solve for x
    x = 82,033,815,754.28/303,387.79
  6. Step 6: Final answer
    x = 270,392.61

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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.