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Finding the Fourth Proportional to 529,771.02, 731,078.48 and 394,410.30

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Solution

The fourth proportional to 529,771.02, 731,078.48 and 394,410.30 is: 544,282.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,771.02 : 731,078.48 = 394,410.30 : x
  2. Step 2: Convert to fraction form
    529,771.02/731,078.48 = 394,410.30/x
  3. Step 3: Cross multiply
    529,771.02x = 731,078.48 × 394,410.30
  4. Step 4: Simplify right side
    529,771.02x = 288,344,882,620.34
  5. Step 5: Solve for x
    x = 288,344,882,620.34/529,771.02
  6. Step 6: Final answer
    x = 544,282.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.