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Finding the Fourth Proportional to 172,668.57, 238,293.60 and 104,692.05

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Solution

The fourth proportional to 172,668.57, 238,293.60 and 104,692.05 is: 144,481.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,668.57 : 238,293.60 = 104,692.05 : x
  2. Step 2: Convert to fraction form
    172,668.57/238,293.60 = 104,692.05/x
  3. Step 3: Cross multiply
    172,668.57x = 238,293.60 × 104,692.05
  4. Step 4: Simplify right side
    172,668.57x = 24,947,445,485.88
  5. Step 5: Solve for x
    x = 24,947,445,485.88/172,668.57
  6. Step 6: Final answer
    x = 144,481.68

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Why These Related Problems?

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