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Finding the Fourth Proportional to 50,461.92, 69,640.56 and 28,105.92

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Solution

The fourth proportional to 50,461.92, 69,640.56 and 28,105.92 is: 38,787.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    50,461.92 : 69,640.56 = 28,105.92 : x
  2. Step 2: Convert to fraction form
    50,461.92/69,640.56 = 28,105.92/x
  3. Step 3: Cross multiply
    50,461.92x = 69,640.56 × 28,105.92
  4. Step 4: Simplify right side
    50,461.92x = 1,957,312,008.12
  5. Step 5: Solve for x
    x = 1,957,312,008.12/50,461.92
  6. Step 6: Final answer
    x = 38,787.90

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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.