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Finding the Fourth Proportional to 279,591.55, 419,534.94 and 121,832.30

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Solution

The fourth proportional to 279,591.55, 419,534.94 and 121,832.30 is: 182,812.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,591.55 : 419,534.94 = 121,832.30 : x
  2. Step 2: Convert to fraction form
    279,591.55/419,534.94 = 121,832.30/x
  3. Step 3: Cross multiply
    279,591.55x = 419,534.94 × 121,832.30
  4. Step 4: Simplify right side
    279,591.55x = 51,112,908,176.27
  5. Step 5: Solve for x
    x = 51,112,908,176.27/279,591.55
  6. Step 6: Final answer
    x = 182,812.78

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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.