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Finding the Fourth Proportional to 66,504.91, 91,778.80 and 37,828.70

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Solution

The fourth proportional to 66,504.91, 91,778.80 and 37,828.70 is: 52,204.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,504.91 : 91,778.80 = 37,828.70 : x
  2. Step 2: Convert to fraction form
    66,504.91/91,778.80 = 37,828.70/x
  3. Step 3: Cross multiply
    66,504.91x = 91,778.80 × 37,828.70
  4. Step 4: Simplify right side
    66,504.91x = 3,471,872,691.56
  5. Step 5: Solve for x
    x = 3,471,872,691.56/66,504.91
  6. Step 6: Final answer
    x = 52,204.76

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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.