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Finding the Fourth Proportional to 203,668.15, 305,529.05 and 75,567

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Solution

The fourth proportional to 203,668.15, 305,529.05 and 75,567 is: 113,360.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,668.15 : 305,529.05 = 75,567 : x
  2. Step 2: Convert to fraction form
    203,668.15/305,529.05 = 75,567/x
  3. Step 3: Cross multiply
    203,668.15x = 305,529.05 × 75,567
  4. Step 4: Simplify right side
    203,668.15x = 23,087,913,721.35
  5. Step 5: Solve for x
    x = 23,087,913,721.35/203,668.15
  6. Step 6: Final answer
    x = 113,360.46

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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.