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Finding the Fourth Proportional to 261,587.80, 391,344.90 and 226,912.60

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Solution

The fourth proportional to 261,587.80, 391,344.90 and 226,912.60 is: 339,469.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,587.80 : 391,344.90 = 226,912.60 : x
  2. Step 2: Convert to fraction form
    261,587.80/391,344.90 = 226,912.60/x
  3. Step 3: Cross multiply
    261,587.80x = 391,344.90 × 226,912.60
  4. Step 4: Simplify right side
    261,587.80x = 88,801,088,755.74
  5. Step 5: Solve for x
    x = 88,801,088,755.74/261,587.80
  6. Step 6: Final answer
    x = 339,469.53

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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.