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Finding the Fourth Proportional to 394,556.56, 591,689.34 and 141,769.12

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Solution

The fourth proportional to 394,556.56, 591,689.34 and 141,769.12 is: 212,601.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,556.56 : 591,689.34 = 141,769.12 : x
  2. Step 2: Convert to fraction form
    394,556.56/591,689.34 = 141,769.12/x
  3. Step 3: Cross multiply
    394,556.56x = 591,689.34 × 141,769.12
  4. Step 4: Simplify right side
    394,556.56x = 83,883,277,045.18
  5. Step 5: Solve for x
    x = 83,883,277,045.18/394,556.56
  6. Step 6: Final answer
    x = 212,601.40

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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.