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Finding the Fourth Proportional to 352,765.31, 486,815.74 and 191,620.47

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Solution

The fourth proportional to 352,765.31, 486,815.74 and 191,620.47 is: 264,436.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,765.31 : 486,815.74 = 191,620.47 : x
  2. Step 2: Convert to fraction form
    352,765.31/486,815.74 = 191,620.47/x
  3. Step 3: Cross multiply
    352,765.31x = 486,815.74 × 191,620.47
  4. Step 4: Simplify right side
    352,765.31x = 93,283,860,423.15
  5. Step 5: Solve for x
    x = 93,283,860,423.15/352,765.31
  6. Step 6: Final answer
    x = 264,436.04

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.