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Finding the Fourth Proportional to 225,382.05, 338,260.79 and 118,804.28

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Solution

The fourth proportional to 225,382.05, 338,260.79 and 118,804.28 is: 178,305.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,382.05 : 338,260.79 = 118,804.28 : x
  2. Step 2: Convert to fraction form
    225,382.05/338,260.79 = 118,804.28/x
  3. Step 3: Cross multiply
    225,382.05x = 338,260.79 × 118,804.28
  4. Step 4: Simplify right side
    225,382.05x = 40,186,828,213.89
  5. Step 5: Solve for x
    x = 40,186,828,213.89/225,382.05
  6. Step 6: Final answer
    x = 178,305.36

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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.