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Finding the Fourth Proportional to 163,709.76, 225,917.18 and 92,089.80

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Solution

The fourth proportional to 163,709.76, 225,917.18 and 92,089.80 is: 127,082.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,709.76 : 225,917.18 = 92,089.80 : x
  2. Step 2: Convert to fraction form
    163,709.76/225,917.18 = 92,089.80/x
  3. Step 3: Cross multiply
    163,709.76x = 225,917.18 × 92,089.80
  4. Step 4: Simplify right side
    163,709.76x = 20,804,667,922.76
  5. Step 5: Solve for x
    x = 20,804,667,922.76/163,709.76
  6. Step 6: Final answer
    x = 127,082.64

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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.