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Finding the Fourth Proportional to 107,936.79, 161,694.81 and 65,712.17

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Solution

The fourth proportional to 107,936.79, 161,694.81 and 65,712.17 is: 98,440.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,936.79 : 161,694.81 = 65,712.17 : x
  2. Step 2: Convert to fraction form
    107,936.79/161,694.81 = 65,712.17/x
  3. Step 3: Cross multiply
    107,936.79x = 161,694.81 × 65,712.17
  4. Step 4: Simplify right side
    107,936.79x = 10,625,316,034.36
  5. Step 5: Solve for x
    x = 10,625,316,034.36/107,936.79
  6. Step 6: Final answer
    x = 98,440.17

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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.