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Finding the Fourth Proportional to 48,308.70, 72,493.45 and 20,606.30

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Solution

The fourth proportional to 48,308.70, 72,493.45 and 20,606.30 is: 30,922.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,308.70 : 72,493.45 = 20,606.30 : x
  2. Step 2: Convert to fraction form
    48,308.70/72,493.45 = 20,606.30/x
  3. Step 3: Cross multiply
    48,308.70x = 72,493.45 × 20,606.30
  4. Step 4: Simplify right side
    48,308.70x = 1,493,821,778.74
  5. Step 5: Solve for x
    x = 1,493,821,778.74/48,308.70
  6. Step 6: Final answer
    x = 30,922.42

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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.