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Finding the Fourth Proportional to 414,772.14, 621,524.40 and 279,335.40

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Solution

The fourth proportional to 414,772.14, 621,524.40 and 279,335.40 is: 418,576.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    414,772.14 : 621,524.40 = 279,335.40 : x
  2. Step 2: Convert to fraction form
    414,772.14/621,524.40 = 279,335.40/x
  3. Step 3: Cross multiply
    414,772.14x = 621,524.40 × 279,335.40
  4. Step 4: Simplify right side
    414,772.14x = 173,613,766,883.76
  5. Step 5: Solve for x
    x = 173,613,766,883.76/414,772.14
  6. Step 6: Final answer
    x = 418,576.25

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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.