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Finding the Fourth Proportional to 291,769.20, 437,653.80 and 279,327.60

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Solution

The fourth proportional to 291,769.20, 437,653.80 and 279,327.60 is: 418,991.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,769.20 : 437,653.80 = 279,327.60 : x
  2. Step 2: Convert to fraction form
    291,769.20/437,653.80 = 279,327.60/x
  3. Step 3: Cross multiply
    291,769.20x = 437,653.80 × 279,327.60
  4. Step 4: Simplify right side
    291,769.20x = 122,248,785,584.88
  5. Step 5: Solve for x
    x = 122,248,785,584.88/291,769.20
  6. Step 6: Final answer
    x = 418,991.40

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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.