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Finding the Fourth Proportional to 383,766.15, 529,692.21 and 261,460.92

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Solution

The fourth proportional to 383,766.15, 529,692.21 and 261,460.92 is: 360,880.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,766.15 : 529,692.21 = 261,460.92 : x
  2. Step 2: Convert to fraction form
    383,766.15/529,692.21 = 261,460.92/x
  3. Step 3: Cross multiply
    383,766.15x = 529,692.21 × 261,460.92
  4. Step 4: Simplify right side
    383,766.15x = 138,493,812,543.43
  5. Step 5: Solve for x
    x = 138,493,812,543.43/383,766.15
  6. Step 6: Final answer
    x = 360,880.74

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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.