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Finding the Fourth Proportional to 279,028.20, 418,542.30 and 195,047.40

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Solution

The fourth proportional to 279,028.20, 418,542.30 and 195,047.40 is: 292,571.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,028.20 : 418,542.30 = 195,047.40 : x
  2. Step 2: Convert to fraction form
    279,028.20/418,542.30 = 195,047.40/x
  3. Step 3: Cross multiply
    279,028.20x = 418,542.30 × 195,047.40
  4. Step 4: Simplify right side
    279,028.20x = 81,635,587,405.02
  5. Step 5: Solve for x
    x = 81,635,587,405.02/279,028.20
  6. Step 6: Final answer
    x = 292,571.10

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1.5x scale

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.