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Finding the Fourth Proportional to 18,586.61, 25,649.91 and 10,520.27

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Solution

The fourth proportional to 18,586.61, 25,649.91 and 10,520.27 is: 14,518.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,586.61 : 25,649.91 = 10,520.27 : x
  2. Step 2: Convert to fraction form
    18,586.61/25,649.91 = 10,520.27/x
  3. Step 3: Cross multiply
    18,586.61x = 25,649.91 × 10,520.27
  4. Step 4: Simplify right side
    18,586.61x = 269,843,850.43
  5. Step 5: Solve for x
    x = 269,843,850.43/18,586.61
  6. Step 6: Final answer
    x = 14,518.18

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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.