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Finding the Fourth Proportional to 72,091.91, 108,153.05 and 27,113.55

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Solution

The fourth proportional to 72,091.91, 108,153.05 and 27,113.55 is: 40,676.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,091.91 : 108,153.05 = 27,113.55 : x
  2. Step 2: Convert to fraction form
    72,091.91/108,153.05 = 27,113.55/x
  3. Step 3: Cross multiply
    72,091.91x = 108,153.05 × 27,113.55
  4. Step 4: Simplify right side
    72,091.91x = 2,932,412,993.26
  5. Step 5: Solve for x
    x = 2,932,412,993.26/72,091.91
  6. Step 6: Final answer
    x = 40,676.04

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.