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Finding the Fourth Proportional to 539,435.89, 744,701.48 and 394,078.56

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Solution

The fourth proportional to 539,435.89, 744,701.48 and 394,078.56 is: 544,032.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,435.89 : 744,701.48 = 394,078.56 : x
  2. Step 2: Convert to fraction form
    539,435.89/744,701.48 = 394,078.56/x
  3. Step 3: Cross multiply
    539,435.89x = 744,701.48 × 394,078.56
  4. Step 4: Simplify right side
    539,435.89x = 293,470,886,868.27
  5. Step 5: Solve for x
    x = 293,470,886,868.27/539,435.89
  6. Step 6: Final answer
    x = 544,032.93

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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.