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Finding the Fourth Proportional to 414,794.40, 621,826.80 and 245,898.40

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Solution

The fourth proportional to 414,794.40, 621,826.80 and 245,898.40 is: 368,631.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    414,794.40 : 621,826.80 = 245,898.40 : x
  2. Step 2: Convert to fraction form
    414,794.40/621,826.80 = 245,898.40/x
  3. Step 3: Cross multiply
    414,794.40x = 621,826.80 × 245,898.40
  4. Step 4: Simplify right side
    414,794.40x = 152,906,215,197.12
  5. Step 5: Solve for x
    x = 152,906,215,197.12/414,794.40
  6. Step 6: Final answer
    x = 368,631.34

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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.