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Finding the Fourth Proportional to 192,395.34, 288,598.05 and 91,169.64

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Solution

The fourth proportional to 192,395.34, 288,598.05 and 91,169.64 is: 136,756.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,395.34 : 288,598.05 = 91,169.64 : x
  2. Step 2: Convert to fraction form
    192,395.34/288,598.05 = 91,169.64/x
  3. Step 3: Cross multiply
    192,395.34x = 288,598.05 × 91,169.64
  4. Step 4: Simplify right side
    192,395.34x = 26,311,380,323.20
  5. Step 5: Solve for x
    x = 26,311,380,323.20/192,395.34
  6. Step 6: Final answer
    x = 136,756.85

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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.