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Finding the Fourth Proportional to 83,650.66, 125,365.21 and 61,359.66

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Solution

The fourth proportional to 83,650.66, 125,365.21 and 61,359.66 is: 91,958.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,650.66 : 125,365.21 = 61,359.66 : x
  2. Step 2: Convert to fraction form
    83,650.66/125,365.21 = 61,359.66/x
  3. Step 3: Cross multiply
    83,650.66x = 125,365.21 × 61,359.66
  4. Step 4: Simplify right side
    83,650.66x = 7,692,366,508.03
  5. Step 5: Solve for x
    x = 7,692,366,508.03/83,650.66
  6. Step 6: Final answer
    x = 91,958.23

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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.