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Finding the Fourth Proportional to 82,790.80, 124,116.54 and 36,008.44

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Solution

The fourth proportional to 82,790.80, 124,116.54 and 36,008.44 is: 53,982.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,790.80 : 124,116.54 = 36,008.44 : x
  2. Step 2: Convert to fraction form
    82,790.80/124,116.54 = 36,008.44/x
  3. Step 3: Cross multiply
    82,790.80x = 124,116.54 × 36,008.44
  4. Step 4: Simplify right side
    82,790.80x = 4,469,242,983.60
  5. Step 5: Solve for x
    x = 4,469,242,983.60/82,790.80
  6. Step 6: Final answer
    x = 53,982.36

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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.