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Finding the Fourth Proportional to 163,617.28, 225,790.72 and 92,961.28

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Solution

The fourth proportional to 163,617.28, 225,790.72 and 92,961.28 is: 128,285.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,617.28 : 225,790.72 = 92,961.28 : x
  2. Step 2: Convert to fraction form
    163,617.28/225,790.72 = 92,961.28/x
  3. Step 3: Cross multiply
    163,617.28x = 225,790.72 × 92,961.28
  4. Step 4: Simplify right side
    163,617.28x = 20,989,794,343.32
  5. Step 5: Solve for x
    x = 20,989,794,343.32/163,617.28
  6. Step 6: Final answer
    x = 128,285.93

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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.