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Finding the Fourth Proportional to 389,348.60, 584,022.90 and 264,932.60

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Solution

The fourth proportional to 389,348.60, 584,022.90 and 264,932.60 is: 397,398.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,348.60 : 584,022.90 = 264,932.60 : x
  2. Step 2: Convert to fraction form
    389,348.60/584,022.90 = 264,932.60/x
  3. Step 3: Cross multiply
    389,348.60x = 584,022.90 × 264,932.60
  4. Step 4: Simplify right side
    389,348.60x = 154,726,705,356.54
  5. Step 5: Solve for x
    x = 154,726,705,356.54/389,348.60
  6. Step 6: Final answer
    x = 397,398.90

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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.