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Finding the Fourth Proportional to 55,772.62, 83,713.61 and 40,939.50

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Solution

The fourth proportional to 55,772.62, 83,713.61 and 40,939.50 is: 61,449.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,772.62 : 83,713.61 = 40,939.50 : x
  2. Step 2: Convert to fraction form
    55,772.62/83,713.61 = 40,939.50/x
  3. Step 3: Cross multiply
    55,772.62x = 83,713.61 × 40,939.50
  4. Step 4: Simplify right side
    55,772.62x = 3,427,193,336.60
  5. Step 5: Solve for x
    x = 3,427,193,336.60/55,772.62
  6. Step 6: Final answer
    x = 61,449.39

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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.