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Finding the Fourth Proportional to 396,323.13, 594,359.80 and 130,021.59

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Solution

The fourth proportional to 396,323.13, 594,359.80 and 130,021.59 is: 194,991.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,323.13 : 594,359.80 = 130,021.59 : x
  2. Step 2: Convert to fraction form
    396,323.13/594,359.80 = 130,021.59/x
  3. Step 3: Cross multiply
    396,323.13x = 594,359.80 × 130,021.59
  4. Step 4: Simplify right side
    396,323.13x = 77,279,606,228.08
  5. Step 5: Solve for x
    x = 77,279,606,228.08/396,323.13
  6. Step 6: Final answer
    x = 194,991.41

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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.