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Finding the Fourth Proportional to 54,903.20, 82,354.80 and 48,342.20

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Solution

The fourth proportional to 54,903.20, 82,354.80 and 48,342.20 is: 72,513.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,903.20 : 82,354.80 = 48,342.20 : x
  2. Step 2: Convert to fraction form
    54,903.20/82,354.80 = 48,342.20/x
  3. Step 3: Cross multiply
    54,903.20x = 82,354.80 × 48,342.20
  4. Step 4: Simplify right side
    54,903.20x = 3,981,212,212.56
  5. Step 5: Solve for x
    x = 3,981,212,212.56/54,903.20
  6. Step 6: Final answer
    x = 72,513.30

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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.