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Finding the Fourth Proportional to 396,391,189.80, 594,586,784.70 and 396,391,189.80

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Solution

The fourth proportional to 396,391,189.80, 594,586,784.70 and 396,391,189.80 is: 594,586,784.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,391,189.80 : 594,586,784.70 = 396,391,189.80 : x
  2. Step 2: Convert to fraction form
    396,391,189.80/594,586,784.70 = 396,391,189.80/x
  3. Step 3: Cross multiply
    396,391,189.80x = 594,586,784.70 × 396,391,189.80
  4. Step 4: Simplify right side
    396,391,189.80x = 235,688,963,026,589,472
  5. Step 5: Solve for x
    x = 235,688,963,026,589,472/396,391,189.80
  6. Step 6: Final answer
    x = 594,586,784.70

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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.