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Finding the Fourth Proportional to 123,846.39, 170,908.65 and 67,257.81

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Solution

The fourth proportional to 123,846.39, 170,908.65 and 67,257.81 is: 92,816.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,846.39 : 170,908.65 = 67,257.81 : x
  2. Step 2: Convert to fraction form
    123,846.39/170,908.65 = 67,257.81/x
  3. Step 3: Cross multiply
    123,846.39x = 170,908.65 × 67,257.81
  4. Step 4: Simplify right side
    123,846.39x = 11,494,941,509.06
  5. Step 5: Solve for x
    x = 11,494,941,509.06/123,846.39
  6. Step 6: Final answer
    x = 92,816.12

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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.