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Finding the Fourth Proportional to 18,170.91, 25,075.20 and 10,213.57

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Solution

The fourth proportional to 18,170.91, 25,075.20 and 10,213.57 is: 14,094.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,170.91 : 25,075.20 = 10,213.57 : x
  2. Step 2: Convert to fraction form
    18,170.91/25,075.20 = 10,213.57/x
  3. Step 3: Cross multiply
    18,170.91x = 25,075.20 × 10,213.57
  4. Step 4: Simplify right side
    18,170.91x = 256,107,310.46
  5. Step 5: Solve for x
    x = 256,107,310.46/18,170.91
  6. Step 6: Final answer
    x = 14,094.36

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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.