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Finding the Fourth Proportional to 235,832.88, 353,676.42 and 78,028.68

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Solution

The fourth proportional to 235,832.88, 353,676.42 and 78,028.68 is: 117,018.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,832.88 : 353,676.42 = 78,028.68 : x
  2. Step 2: Convert to fraction form
    235,832.88/353,676.42 = 78,028.68/x
  3. Step 3: Cross multiply
    235,832.88x = 353,676.42 × 78,028.68
  4. Step 4: Simplify right side
    235,832.88x = 27,596,904,199.73
  5. Step 5: Solve for x
    x = 27,596,904,199.73/235,832.88
  6. Step 6: Final answer
    x = 117,018.90

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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.