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Finding the Fourth Proportional to 360,778.10, 541,353.92 and 261,755.60

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Solution

The fourth proportional to 360,778.10, 541,353.92 and 261,755.60 is: 392,768.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    360,778.10 : 541,353.92 = 261,755.60 : x
  2. Step 2: Convert to fraction form
    360,778.10/541,353.92 = 261,755.60/x
  3. Step 3: Cross multiply
    360,778.10x = 541,353.92 × 261,755.60
  4. Step 4: Simplify right side
    360,778.10x = 141,702,416,126.40
  5. Step 5: Solve for x
    x = 141,702,416,126.40/360,778.10
  6. Step 6: Final answer
    x = 392,768.90

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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.