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Finding the Fourth Proportional to 447,834.60, 618,068.25 and 256,843.89

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Solution

The fourth proportional to 447,834.60, 618,068.25 and 256,843.89 is: 354,476.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    447,834.60 : 618,068.25 = 256,843.89 : x
  2. Step 2: Convert to fraction form
    447,834.60/618,068.25 = 256,843.89/x
  3. Step 3: Cross multiply
    447,834.60x = 618,068.25 × 256,843.89
  4. Step 4: Simplify right side
    447,834.60x = 158,747,053,615.49
  5. Step 5: Solve for x
    x = 158,747,053,615.49/447,834.60
  6. Step 6: Final answer
    x = 354,476.97

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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.