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Finding the Fourth Proportional to 454,890.60, 682,335.90 and 448,985.70

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Solution

The fourth proportional to 454,890.60, 682,335.90 and 448,985.70 is: 673,478.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    454,890.60 : 682,335.90 = 448,985.70 : x
  2. Step 2: Convert to fraction form
    454,890.60/682,335.90 = 448,985.70/x
  3. Step 3: Cross multiply
    454,890.60x = 682,335.90 × 448,985.70
  4. Step 4: Simplify right side
    454,890.60x = 306,359,061,696.63
  5. Step 5: Solve for x
    x = 306,359,061,696.63/454,890.60
  6. Step 6: Final answer
    x = 673,478.55

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