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Finding the Fourth Proportional to 82,260.48, 122,668.32 and 81,512.04

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Solution

The fourth proportional to 82,260.48, 122,668.32 and 81,512.04 is: 121,552.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,260.48 : 122,668.32 = 81,512.04 : x
  2. Step 2: Convert to fraction form
    82,260.48/122,668.32 = 81,512.04/x
  3. Step 3: Cross multiply
    82,260.48x = 122,668.32 × 81,512.04
  4. Step 4: Simplify right side
    82,260.48x = 9,998,945,006.57
  5. Step 5: Solve for x
    x = 9,998,945,006.57/82,260.48
  6. Step 6: Final answer
    x = 121,552.23

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These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.