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Finding the Fourth Proportional to 147,818.82, 203,989.96 and 79,835.79

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Solution

The fourth proportional to 147,818.82, 203,989.96 and 79,835.79 is: 110,173.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,818.82 : 203,989.96 = 79,835.79 : x
  2. Step 2: Convert to fraction form
    147,818.82/203,989.96 = 79,835.79/x
  3. Step 3: Cross multiply
    147,818.82x = 203,989.96 × 79,835.79
  4. Step 4: Simplify right side
    147,818.82x = 16,285,700,473.43
  5. Step 5: Solve for x
    x = 16,285,700,473.43/147,818.82
  6. Step 6: Final answer
    x = 110,173.39

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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.