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Finding the Fourth Proportional to 27,125.20, 40,687.80 and 15,461.20

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Solution

The fourth proportional to 27,125.20, 40,687.80 and 15,461.20 is: 23,191.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,125.20 : 40,687.80 = 15,461.20 : x
  2. Step 2: Convert to fraction form
    27,125.20/40,687.80 = 15,461.20/x
  3. Step 3: Cross multiply
    27,125.20x = 40,687.80 × 15,461.20
  4. Step 4: Simplify right side
    27,125.20x = 629,082,213.36
  5. Step 5: Solve for x
    x = 629,082,213.36/27,125.20
  6. Step 6: Final answer
    x = 23,191.80

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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.