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Finding the Fourth Proportional to 396,040.80, 594,061.20 and 368,047.20

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Solution

The fourth proportional to 396,040.80, 594,061.20 and 368,047.20 is: 552,070.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,040.80 : 594,061.20 = 368,047.20 : x
  2. Step 2: Convert to fraction form
    396,040.80/594,061.20 = 368,047.20/x
  3. Step 3: Cross multiply
    396,040.80x = 594,061.20 × 368,047.20
  4. Step 4: Simplify right side
    396,040.80x = 218,642,561,288.64
  5. Step 5: Solve for x
    x = 218,642,561,288.64/396,040.80
  6. Step 6: Final answer
    x = 552,070.80

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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.