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Finding the Fourth Proportional to 178,245.36, 245,978.59 and 102,793.86

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Solution

The fourth proportional to 178,245.36, 245,978.59 and 102,793.86 is: 141,855.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    178,245.36 : 245,978.59 = 102,793.86 : x
  2. Step 2: Convert to fraction form
    178,245.36/245,978.59 = 102,793.86/x
  3. Step 3: Cross multiply
    178,245.36x = 245,978.59 × 102,793.86
  4. Step 4: Simplify right side
    178,245.36x = 25,285,087,513.56
  5. Step 5: Solve for x
    x = 25,285,087,513.56/178,245.36
  6. Step 6: Final answer
    x = 141,855.52

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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.