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Finding the Fourth Proportional to 327,721.20, 459,742.80 and 327,721.20

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Solution

The fourth proportional to 327,721.20, 459,742.80 and 327,721.20 is: 459,742.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    327,721.20 : 459,742.80 = 327,721.20 : x
  2. Step 2: Convert to fraction form
    327,721.20/459,742.80 = 327,721.20/x
  3. Step 3: Cross multiply
    327,721.20x = 459,742.80 × 327,721.20
  4. Step 4: Simplify right side
    327,721.20x = 150,667,462,107.36
  5. Step 5: Solve for x
    x = 150,667,462,107.36/327,721.20
  6. Step 6: Final answer
    x = 459,742.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.