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Finding the Fourth Proportional to 167,940.36, 231,748.02 and 100,859.40

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Solution

The fourth proportional to 167,940.36, 231,748.02 and 100,859.40 is: 139,180.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    167,940.36 : 231,748.02 = 100,859.40 : x
  2. Step 2: Convert to fraction form
    167,940.36/231,748.02 = 100,859.40/x
  3. Step 3: Cross multiply
    167,940.36x = 231,748.02 × 100,859.40
  4. Step 4: Simplify right side
    167,940.36x = 23,373,966,248.39
  5. Step 5: Solve for x
    x = 23,373,966,248.39/167,940.36
  6. Step 6: Final answer
    x = 139,180.16

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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.