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Finding the Fourth Proportional to 203,242.58, 304,879.66 and 61,076.76

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Solution

The fourth proportional to 203,242.58, 304,879.66 and 61,076.76 is: 91,619.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,242.58 : 304,879.66 = 61,076.76 : x
  2. Step 2: Convert to fraction form
    203,242.58/304,879.66 = 61,076.76/x
  3. Step 3: Cross multiply
    203,242.58x = 304,879.66 × 61,076.76
  4. Step 4: Simplify right side
    203,242.58x = 18,621,061,822.70
  5. Step 5: Solve for x
    x = 18,621,061,822.70/203,242.58
  6. Step 6: Final answer
    x = 91,619.89

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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.