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Finding the Fourth Proportional to 481,641.33, 721,940.53 and 313,281.97

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Solution

The fourth proportional to 481,641.33, 721,940.53 and 313,281.97 is: 469,583.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    481,641.33 : 721,940.53 = 313,281.97 : x
  2. Step 2: Convert to fraction form
    481,641.33/721,940.53 = 313,281.97/x
  3. Step 3: Cross multiply
    481,641.33x = 721,940.53 × 313,281.97
  4. Step 4: Simplify right side
    481,641.33x = 226,170,951,461.24
  5. Step 5: Solve for x
    x = 226,170,951,461.24/481,641.33
  6. Step 6: Final answer
    x = 469,583.77

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.