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Finding the Fourth Proportional to 136,480.79, 204,836.21 and 57,651.59

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Solution

The fourth proportional to 136,480.79, 204,836.21 and 57,651.59 is: 86,525.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,480.79 : 204,836.21 = 57,651.59 : x
  2. Step 2: Convert to fraction form
    136,480.79/204,836.21 = 57,651.59/x
  3. Step 3: Cross multiply
    136,480.79x = 204,836.21 × 57,651.59
  4. Step 4: Simplify right side
    136,480.79x = 11,809,133,196.07
  5. Step 5: Solve for x
    x = 11,809,133,196.07/136,480.79
  6. Step 6: Final answer
    x = 86,525.97

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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.