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Finding the Fourth Proportional to 636,804.93, 878,293.31 and 394,951.89

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Solution

The fourth proportional to 636,804.93, 878,293.31 and 394,951.89 is: 544,725.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,804.93 : 878,293.31 = 394,951.89 : x
  2. Step 2: Convert to fraction form
    636,804.93/878,293.31 = 394,951.89/x
  3. Step 3: Cross multiply
    636,804.93x = 878,293.31 × 394,951.89
  4. Step 4: Simplify right side
    636,804.93x = 346,883,600,784.10
  5. Step 5: Solve for x
    x = 346,883,600,784.10/636,804.93
  6. Step 6: Final answer
    x = 544,725.06

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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.