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Finding the Fourth Proportional to 82,796.90, 114,042.06 and 63,640.04

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Solution

The fourth proportional to 82,796.90, 114,042.06 and 63,640.04 is: 87,655.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,796.90 : 114,042.06 = 63,640.04 : x
  2. Step 2: Convert to fraction form
    82,796.90/114,042.06 = 63,640.04/x
  3. Step 3: Cross multiply
    82,796.90x = 114,042.06 × 63,640.04
  4. Step 4: Simplify right side
    82,796.90x = 7,257,641,260.08
  5. Step 5: Solve for x
    x = 7,257,641,260.08/82,796.90
  6. Step 6: Final answer
    x = 87,655.95

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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.