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Finding the Fourth Proportional to 135,504.76, 203,255.30 and 42,010.52

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Solution

The fourth proportional to 135,504.76, 203,255.30 and 42,010.52 is: 63,015.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,504.76 : 203,255.30 = 42,010.52 : x
  2. Step 2: Convert to fraction form
    135,504.76/203,255.30 = 42,010.52/x
  3. Step 3: Cross multiply
    135,504.76x = 203,255.30 × 42,010.52
  4. Step 4: Simplify right side
    135,504.76x = 8,538,860,845.76
  5. Step 5: Solve for x
    x = 8,538,860,845.76/135,504.76
  6. Step 6: Final answer
    x = 63,015.21

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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.