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Finding the Fourth Proportional to 192,703.80, 288,969.30 and 74,335.80

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Solution

The fourth proportional to 192,703.80, 288,969.30 and 74,335.80 is: 111,470.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,703.80 : 288,969.30 = 74,335.80 : x
  2. Step 2: Convert to fraction form
    192,703.80/288,969.30 = 74,335.80/x
  3. Step 3: Cross multiply
    192,703.80x = 288,969.30 × 74,335.80
  4. Step 4: Simplify right side
    192,703.80x = 21,480,764,090.94
  5. Step 5: Solve for x
    x = 21,480,764,090.94/192,703.80
  6. Step 6: Final answer
    x = 111,470.37

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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.