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Finding the Fourth Proportional to 447,734.16, 668,325.42 and 394,591.68

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Solution

The fourth proportional to 447,734.16, 668,325.42 and 394,591.68 is: 589,000.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    447,734.16 : 668,325.42 = 394,591.68 : x
  2. Step 2: Convert to fraction form
    447,734.16/668,325.42 = 394,591.68/x
  3. Step 3: Cross multiply
    447,734.16x = 668,325.42 × 394,591.68
  4. Step 4: Simplify right side
    447,734.16x = 263,715,650,264.51
  5. Step 5: Solve for x
    x = 263,715,650,264.51/447,734.16
  6. Step 6: Final answer
    x = 589,000.51

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.