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Finding the Fourth Proportional to 109,942.70, 164,881.65 and 43,360.70

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Solution

The fourth proportional to 109,942.70, 164,881.65 and 43,360.70 is: 65,028.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,942.70 : 164,881.65 = 43,360.70 : x
  2. Step 2: Convert to fraction form
    109,942.70/164,881.65 = 43,360.70/x
  3. Step 3: Cross multiply
    109,942.70x = 164,881.65 × 43,360.70
  4. Step 4: Simplify right side
    109,942.70x = 7,149,383,761.16
  5. Step 5: Solve for x
    x = 7,149,383,761.16/109,942.70
  6. Step 6: Final answer
    x = 65,028.27

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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.