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Finding the Fourth Proportional to 62,185.78, 85,830.22 and 39,520.35

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Solution

The fourth proportional to 62,185.78, 85,830.22 and 39,520.35 is: 54,546.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,185.78 : 85,830.22 = 39,520.35 : x
  2. Step 2: Convert to fraction form
    62,185.78/85,830.22 = 39,520.35/x
  3. Step 3: Cross multiply
    62,185.78x = 85,830.22 × 39,520.35
  4. Step 4: Simplify right side
    62,185.78x = 3,392,040,334.98
  5. Step 5: Solve for x
    x = 3,392,040,334.98/62,185.78
  6. Step 6: Final answer
    x = 54,546.88

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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.