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Finding the Fourth Proportional to 414,019.20, 620,591.40 and 236,143.20

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Solution

The fourth proportional to 414,019.20, 620,591.40 and 236,143.20 is: 353,965.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    414,019.20 : 620,591.40 = 236,143.20 : x
  2. Step 2: Convert to fraction form
    414,019.20/620,591.40 = 236,143.20/x
  3. Step 3: Cross multiply
    414,019.20x = 620,591.40 × 236,143.20
  4. Step 4: Simplify right side
    414,019.20x = 146,548,439,088.48
  5. Step 5: Solve for x
    x = 146,548,439,088.48/414,019.20
  6. Step 6: Final answer
    x = 353,965.32

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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.