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Finding the Fourth Proportional to 189,573.73, 261,609.64 and 104,689.09

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Solution

The fourth proportional to 189,573.73, 261,609.64 and 104,689.09 is: 144,469.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,573.73 : 261,609.64 = 104,689.09 : x
  2. Step 2: Convert to fraction form
    189,573.73/261,609.64 = 104,689.09/x
  3. Step 3: Cross multiply
    189,573.73x = 261,609.64 × 104,689.09
  4. Step 4: Simplify right side
    189,573.73x = 27,387,675,146.83
  5. Step 5: Solve for x
    x = 27,387,675,146.83/189,573.73
  6. Step 6: Final answer
    x = 144,469.78

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1.5x scale

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.