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Finding the Fourth Proportional to 62,980.64, 94,462.65 and 20,850.27

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Solution

The fourth proportional to 62,980.64, 94,462.65 and 20,850.27 is: 31,272.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,980.64 : 94,462.65 = 20,850.27 : x
  2. Step 2: Convert to fraction form
    62,980.64/94,462.65 = 20,850.27/x
  3. Step 3: Cross multiply
    62,980.64x = 94,462.65 × 20,850.27
  4. Step 4: Simplify right side
    62,980.64x = 1,969,571,757.42
  5. Step 5: Solve for x
    x = 1,969,571,757.42/62,980.64
  6. Step 6: Final answer
    x = 31,272.66

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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.