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Finding the Fourth Proportional to 96,980.82, 133,757.54 and 66,372.02

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Solution

The fourth proportional to 96,980.82, 133,757.54 and 66,372.02 is: 91,541.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    96,980.82 : 133,757.54 = 66,372.02 : x
  2. Step 2: Convert to fraction form
    96,980.82/133,757.54 = 66,372.02/x
  3. Step 3: Cross multiply
    96,980.82x = 133,757.54 × 66,372.02
  4. Step 4: Simplify right side
    96,980.82x = 8,877,758,120.03
  5. Step 5: Solve for x
    x = 8,877,758,120.03/96,980.82
  6. Step 6: Final answer
    x = 91,541.38

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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.