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Finding the Fourth Proportional to 82,892.81, 124,340.07 and 66,357.97

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Solution

The fourth proportional to 82,892.81, 124,340.07 and 66,357.97 is: 99,537.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,892.81 : 124,340.07 = 66,357.97 : x
  2. Step 2: Convert to fraction form
    82,892.81/124,340.07 = 66,357.97/x
  3. Step 3: Cross multiply
    82,892.81x = 124,340.07 × 66,357.97
  4. Step 4: Simplify right side
    82,892.81x = 8,250,954,013.16
  5. Step 5: Solve for x
    x = 8,250,954,013.16/82,892.81
  6. Step 6: Final answer
    x = 99,537.63

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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.