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Finding the Fourth Proportional to 384,618.28, 576,910.62 and 118,405.84

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Solution

The fourth proportional to 384,618.28, 576,910.62 and 118,405.84 is: 177,603.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    384,618.28 : 576,910.62 = 118,405.84 : x
  2. Step 2: Convert to fraction form
    384,618.28/576,910.62 = 118,405.84/x
  3. Step 3: Cross multiply
    384,618.28x = 576,910.62 × 118,405.84
  4. Step 4: Simplify right side
    384,618.28x = 68,309,586,566.02
  5. Step 5: Solve for x
    x = 68,309,586,566.02/384,618.28
  6. Step 6: Final answer
    x = 177,603.59

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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.