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Finding the Fourth Proportional to 397,079.15, 547,692.10 and 261,069.62

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Solution

The fourth proportional to 397,079.15, 547,692.10 and 261,069.62 is: 360,093.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,079.15 : 547,692.10 = 261,069.62 : x
  2. Step 2: Convert to fraction form
    397,079.15/547,692.10 = 261,069.62/x
  3. Step 3: Cross multiply
    397,079.15x = 547,692.10 × 261,069.62
  4. Step 4: Simplify right side
    397,079.15x = 142,985,765,032.87
  5. Step 5: Solve for x
    x = 142,985,765,032.87/397,079.15
  6. Step 6: Final answer
    x = 360,093.87

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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.