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Finding the Fourth Proportional to 115,171.10, 158,863.36 and 79,298.82

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Solution

The fourth proportional to 115,171.10, 158,863.36 and 79,298.82 is: 109,382.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,171.10 : 158,863.36 = 79,298.82 : x
  2. Step 2: Convert to fraction form
    115,171.10/158,863.36 = 79,298.82/x
  3. Step 3: Cross multiply
    115,171.10x = 158,863.36 × 79,298.82
  4. Step 4: Simplify right side
    115,171.10x = 12,597,676,989.24
  5. Step 5: Solve for x
    x = 12,597,676,989.24/115,171.10
  6. Step 6: Final answer
    x = 109,382.28

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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.