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Finding the Fourth Proportional to 189,900.63, 262,052.26 and 103,842.54

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Solution

The fourth proportional to 189,900.63, 262,052.26 and 103,842.54 is: 143,296.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,900.63 : 262,052.26 = 103,842.54 : x
  2. Step 2: Convert to fraction form
    189,900.63/262,052.26 = 103,842.54/x
  3. Step 3: Cross multiply
    189,900.63x = 262,052.26 × 103,842.54
  4. Step 4: Simplify right side
    189,900.63x = 27,212,172,291.14
  5. Step 5: Solve for x
    x = 27,212,172,291.14/189,900.63
  6. Step 6: Final answer
    x = 143,296.90

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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.