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Finding the Fourth Proportional to 192,460.80, 288,302.40 and 133,363.20

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Solution

The fourth proportional to 192,460.80, 288,302.40 and 133,363.20 is: 199,775.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,460.80 : 288,302.40 = 133,363.20 : x
  2. Step 2: Convert to fraction form
    192,460.80/288,302.40 = 133,363.20/x
  3. Step 3: Cross multiply
    192,460.80x = 288,302.40 × 133,363.20
  4. Step 4: Simplify right side
    192,460.80x = 38,448,930,631.68
  5. Step 5: Solve for x
    x = 38,448,930,631.68/192,460.80
  6. Step 6: Final answer
    x = 199,775.39

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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.