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Finding the Fourth Proportional to 201,101.72, 277,539.64 and 115,043.61

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Solution

The fourth proportional to 201,101.72, 277,539.64 and 115,043.61 is: 158,771.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,101.72 : 277,539.64 = 115,043.61 : x
  2. Step 2: Convert to fraction form
    201,101.72/277,539.64 = 115,043.61/x
  3. Step 3: Cross multiply
    201,101.72x = 277,539.64 × 115,043.61
  4. Step 4: Simplify right side
    201,101.72x = 31,929,162,103.70
  5. Step 5: Solve for x
    x = 31,929,162,103.70/201,101.72
  6. Step 6: Final answer
    x = 158,771.21

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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.