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Finding the Fourth Proportional to 55,940.20, 83,956.20 and 55,502.80

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Solution

The fourth proportional to 55,940.20, 83,956.20 and 55,502.80 is: 83,299.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,940.20 : 83,956.20 = 55,502.80 : x
  2. Step 2: Convert to fraction form
    55,940.20/83,956.20 = 55,502.80/x
  3. Step 3: Cross multiply
    55,940.20x = 83,956.20 × 55,502.80
  4. Step 4: Simplify right side
    55,940.20x = 4,659,804,177.36
  5. Step 5: Solve for x
    x = 4,659,804,177.36/55,940.20
  6. Step 6: Final answer
    x = 83,299.74

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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.