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Finding the Fourth Proportional to 45,859.78, 68,778.13 and 17,770.20

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Solution

The fourth proportional to 45,859.78, 68,778.13 and 17,770.20 is: 26,650.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,859.78 : 68,778.13 = 17,770.20 : x
  2. Step 2: Convert to fraction form
    45,859.78/68,778.13 = 17,770.20/x
  3. Step 3: Cross multiply
    45,859.78x = 68,778.13 × 17,770.20
  4. Step 4: Simplify right side
    45,859.78x = 1,222,201,125.73
  5. Step 5: Solve for x
    x = 1,222,201,125.73/45,859.78
  6. Step 6: Final answer
    x = 26,650.83

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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.