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Finding the Fourth Proportional to 119,305.76, 178,949.30 and 69,353.97

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Solution

The fourth proportional to 119,305.76, 178,949.30 and 69,353.97 is: 104,025.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,305.76 : 178,949.30 = 69,353.97 : x
  2. Step 2: Convert to fraction form
    119,305.76/178,949.30 = 69,353.97/x
  3. Step 3: Cross multiply
    119,305.76x = 178,949.30 × 69,353.97
  4. Step 4: Simplify right side
    119,305.76x = 12,410,844,036.95
  5. Step 5: Solve for x
    x = 12,410,844,036.95/119,305.76
  6. Step 6: Final answer
    x = 104,025.53

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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.