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Finding the Fourth Proportional to 448,086.60, 672,129.90 and 413,872.20

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Solution

The fourth proportional to 448,086.60, 672,129.90 and 413,872.20 is: 620,808.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    448,086.60 : 672,129.90 = 413,872.20 : x
  2. Step 2: Convert to fraction form
    448,086.60/672,129.90 = 413,872.20/x
  3. Step 3: Cross multiply
    448,086.60x = 672,129.90 × 413,872.20
  4. Step 4: Simplify right side
    448,086.60x = 278,175,880,398.78
  5. Step 5: Solve for x
    x = 278,175,880,398.78/448,086.60
  6. Step 6: Final answer
    x = 620,808.30

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