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Finding the Fourth Proportional to 48,951.88, 73,428.06 and 12,015.88

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Solution

The fourth proportional to 48,951.88, 73,428.06 and 12,015.88 is: 18,023.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,951.88 : 73,428.06 = 12,015.88 : x
  2. Step 2: Convert to fraction form
    48,951.88/73,428.06 = 12,015.88/x
  3. Step 3: Cross multiply
    48,951.88x = 73,428.06 × 12,015.88
  4. Step 4: Simplify right side
    48,951.88x = 882,302,757.59
  5. Step 5: Solve for x
    x = 882,302,757.59/48,951.88
  6. Step 6: Final answer
    x = 18,023.88

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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.