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Finding the Fourth Proportional to 92,673.28, 127,793.64 and 79,288.84

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Solution

The fourth proportional to 92,673.28, 127,793.64 and 79,288.84 is: 109,336.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,673.28 : 127,793.64 = 79,288.84 : x
  2. Step 2: Convert to fraction form
    92,673.28/127,793.64 = 79,288.84/x
  3. Step 3: Cross multiply
    92,673.28x = 127,793.64 × 79,288.84
  4. Step 4: Simplify right side
    92,673.28x = 10,132,609,474.98
  5. Step 5: Solve for x
    x = 10,132,609,474.98/92,673.28
  6. Step 6: Final answer
    x = 109,336.90

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1.5x scale

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.