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Finding the Fourth Proportional to 303,555.78, 418,825.35 and 196,086.60

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Solution

The fourth proportional to 303,555.78, 418,825.35 and 196,086.60 is: 270,546.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,555.78 : 418,825.35 = 196,086.60 : x
  2. Step 2: Convert to fraction form
    303,555.78/418,825.35 = 196,086.60/x
  3. Step 3: Cross multiply
    303,555.78x = 418,825.35 × 196,086.60
  4. Step 4: Simplify right side
    303,555.78x = 82,126,038,875.31
  5. Step 5: Solve for x
    x = 82,126,038,875.31/303,555.78
  6. Step 6: Final answer
    x = 270,546.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.