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Finding the Fourth Proportional to 206,662.20, 309,920.40 and 94,396.20

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Solution

The fourth proportional to 206,662.20, 309,920.40 and 94,396.20 is: 141,561.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,662.20 : 309,920.40 = 94,396.20 : x
  2. Step 2: Convert to fraction form
    206,662.20/309,920.40 = 94,396.20/x
  3. Step 3: Cross multiply
    206,662.20x = 309,920.40 × 94,396.20
  4. Step 4: Simplify right side
    206,662.20x = 29,255,308,062.48
  5. Step 5: Solve for x
    x = 29,255,308,062.48/206,662.20
  6. Step 6: Final answer
    x = 141,561.00

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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.