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Finding the Fourth Proportional to 135,953.72, 203,951.30 and 69,357.52

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Solution

The fourth proportional to 135,953.72, 203,951.30 and 69,357.52 is: 104,046.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,953.72 : 203,951.30 = 69,357.52 : x
  2. Step 2: Convert to fraction form
    135,953.72/203,951.30 = 69,357.52/x
  3. Step 3: Cross multiply
    135,953.72x = 203,951.30 × 69,357.52
  4. Step 4: Simplify right side
    135,953.72x = 14,145,556,368.78
  5. Step 5: Solve for x
    x = 14,145,556,368.78/135,953.72
  6. Step 6: Final answer
    x = 104,046.85

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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.