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Finding the Fourth Proportional to 332,620.31, 498,205.80 and 218,639.45

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Solution

The fourth proportional to 332,620.31, 498,205.80 and 218,639.45 is: 327,482.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    332,620.31 : 498,205.80 = 218,639.45 : x
  2. Step 2: Convert to fraction form
    332,620.31/498,205.80 = 218,639.45/x
  3. Step 3: Cross multiply
    332,620.31x = 498,205.80 × 218,639.45
  4. Step 4: Simplify right side
    332,620.31x = 108,927,443,344.33
  5. Step 5: Solve for x
    x = 108,927,443,344.33/332,620.31
  6. Step 6: Final answer
    x = 327,482.84

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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.