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Finding the Fourth Proportional to 82,008.40, 123,061.20 and 54,008.73

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Solution

The fourth proportional to 82,008.40, 123,061.20 and 54,008.73 is: 81,045.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,008.40 : 123,061.20 = 54,008.73 : x
  2. Step 2: Convert to fraction form
    82,008.40/123,061.20 = 54,008.73/x
  3. Step 3: Cross multiply
    82,008.40x = 123,061.20 × 54,008.73
  4. Step 4: Simplify right side
    82,008.40x = 6,646,379,124.28
  5. Step 5: Solve for x
    x = 6,646,379,124.28/82,008.40
  6. Step 6: Final answer
    x = 81,045.10

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.