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Finding the Fourth Proportional to 404,666.20, 606,270.30 and 193,839.40

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Solution

The fourth proportional to 404,666.20, 606,270.30 and 193,839.40 is: 290,409.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,666.20 : 606,270.30 = 193,839.40 : x
  2. Step 2: Convert to fraction form
    404,666.20/606,270.30 = 193,839.40/x
  3. Step 3: Cross multiply
    404,666.20x = 606,270.30 × 193,839.40
  4. Step 4: Simplify right side
    404,666.20x = 117,519,071,189.82
  5. Step 5: Solve for x
    x = 117,519,071,189.82/404,666.20
  6. Step 6: Final answer
    x = 290,409.90

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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.