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Finding the Fourth Proportional to 395,511.44, 545,775.72 and 225,722.48

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Solution

The fourth proportional to 395,511.44, 545,775.72 and 225,722.48 is: 311,479.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,511.44 : 545,775.72 = 225,722.48 : x
  2. Step 2: Convert to fraction form
    395,511.44/545,775.72 = 225,722.48/x
  3. Step 3: Cross multiply
    395,511.44x = 545,775.72 × 225,722.48
  4. Step 4: Simplify right side
    395,511.44x = 123,193,849,042.19
  5. Step 5: Solve for x
    x = 123,193,849,042.19/395,511.44
  6. Step 6: Final answer
    x = 311,479.86

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.