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Finding the Fourth Proportional to 18,586.17, 25,647.21 and 11,031.21

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Solution

The fourth proportional to 18,586.17, 25,647.21 and 11,031.21 is: 15,222.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,586.17 : 25,647.21 = 11,031.21 : x
  2. Step 2: Convert to fraction form
    18,586.17/25,647.21 = 11,031.21/x
  3. Step 3: Cross multiply
    18,586.17x = 25,647.21 × 11,031.21
  4. Step 4: Simplify right side
    18,586.17x = 282,919,759.42
  5. Step 5: Solve for x
    x = 282,919,759.42/18,586.17
  6. Step 6: Final answer
    x = 15,222.06

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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.