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Finding the Fourth Proportional to 290,134.20, 434,618.10 and 195,655.80

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Solution

The fourth proportional to 290,134.20, 434,618.10 and 195,655.80 is: 293,090.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,134.20 : 434,618.10 = 195,655.80 : x
  2. Step 2: Convert to fraction form
    290,134.20/434,618.10 = 195,655.80/x
  3. Step 3: Cross multiply
    290,134.20x = 434,618.10 × 195,655.80
  4. Step 4: Simplify right side
    290,134.20x = 85,035,552,049.98
  5. Step 5: Solve for x
    x = 85,035,552,049.98/290,134.20
  6. Step 6: Final answer
    x = 293,090.41

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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.