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Finding the Fourth Proportional to 414,326.92, 621,818.40 and 161,728.40

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Solution

The fourth proportional to 414,326.92, 621,818.40 and 161,728.40 is: 242,720.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    414,326.92 : 621,818.40 = 161,728.40 : x
  2. Step 2: Convert to fraction form
    414,326.92/621,818.40 = 161,728.40/x
  3. Step 3: Cross multiply
    414,326.92x = 621,818.40 × 161,728.40
  4. Step 4: Simplify right side
    414,326.92x = 100,565,694,922.56
  5. Step 5: Solve for x
    x = 100,565,694,922.56/414,326.92
  6. Step 6: Final answer
    x = 242,720.64

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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.