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Finding the Fourth Proportional to 203,091.12, 304,631.52 and 84,759.84

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Solution

The fourth proportional to 203,091.12, 304,631.52 and 84,759.84 is: 127,137.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,091.12 : 304,631.52 = 84,759.84 : x
  2. Step 2: Convert to fraction form
    203,091.12/304,631.52 = 84,759.84/x
  3. Step 3: Cross multiply
    203,091.12x = 304,631.52 × 84,759.84
  4. Step 4: Simplify right side
    203,091.12x = 25,820,518,894.16
  5. Step 5: Solve for x
    x = 25,820,518,894.16/203,091.12
  6. Step 6: Final answer
    x = 127,137.61

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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.