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Finding the Fourth Proportional to 423,858.41, 635,787.92 and 108,315.62

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Solution

The fourth proportional to 423,858.41, 635,787.92 and 108,315.62 is: 162,473.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,858.41 : 635,787.92 = 108,315.62 : x
  2. Step 2: Convert to fraction form
    423,858.41/635,787.92 = 108,315.62/x
  3. Step 3: Cross multiply
    423,858.41x = 635,787.92 × 108,315.62
  4. Step 4: Simplify right side
    423,858.41x = 68,865,762,743.31
  5. Step 5: Solve for x
    x = 68,865,762,743.31/423,858.41
  6. Step 6: Final answer
    x = 162,473.51

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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.