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Finding the Fourth Proportional to 111,401.80, 167,102.70 and 107,465.20

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Solution

The fourth proportional to 111,401.80, 167,102.70 and 107,465.20 is: 161,197.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,401.80 : 167,102.70 = 107,465.20 : x
  2. Step 2: Convert to fraction form
    111,401.80/167,102.70 = 107,465.20/x
  3. Step 3: Cross multiply
    111,401.80x = 167,102.70 × 107,465.20
  4. Step 4: Simplify right side
    111,401.80x = 17,957,725,076.04
  5. Step 5: Solve for x
    x = 17,957,725,076.04/111,401.80
  6. Step 6: Final answer
    x = 161,197.80

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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.