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Finding the Fourth Proportional to 119,908.80, 179,906.40 and 115,588.80

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Solution

The fourth proportional to 119,908.80, 179,906.40 and 115,588.80 is: 173,424.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,908.80 : 179,906.40 = 115,588.80 : x
  2. Step 2: Convert to fraction form
    119,908.80/179,906.40 = 115,588.80/x
  3. Step 3: Cross multiply
    119,908.80x = 179,906.40 × 115,588.80
  4. Step 4: Simplify right side
    119,908.80x = 20,795,164,888.32
  5. Step 5: Solve for x
    x = 20,795,164,888.32/119,908.80
  6. Step 6: Final answer
    x = 173,424.84

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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.