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Finding the Fourth Proportional to 326,576.92, 490,052.58 and 126,871.60

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Solution

The fourth proportional to 326,576.92, 490,052.58 and 126,871.60 is: 190,380.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,576.92 : 490,052.58 = 126,871.60 : x
  2. Step 2: Convert to fraction form
    326,576.92/490,052.58 = 126,871.60/x
  3. Step 3: Cross multiply
    326,576.92x = 490,052.58 × 126,871.60
  4. Step 4: Simplify right side
    326,576.92x = 62,173,754,908.73
  5. Step 5: Solve for x
    x = 62,173,754,908.73/326,576.92
  6. Step 6: Final answer
    x = 190,380.13

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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.