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Finding the Fourth Proportional to 361,487.82, 542,257.65 and 108,748.38

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Solution

The fourth proportional to 361,487.82, 542,257.65 and 108,748.38 is: 163,130.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    361,487.82 : 542,257.65 = 108,748.38 : x
  2. Step 2: Convert to fraction form
    361,487.82/542,257.65 = 108,748.38/x
  3. Step 3: Cross multiply
    361,487.82x = 542,257.65 × 108,748.38
  4. Step 4: Simplify right side
    361,487.82x = 58,969,640,980.11
  5. Step 5: Solve for x
    x = 58,969,640,980.11/361,487.82
  6. Step 6: Final answer
    x = 163,130.37

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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.