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Finding the Fourth Proportional to 18,625.01, 25,685.46 and 13,856.88

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Solution

The fourth proportional to 18,625.01, 25,685.46 and 13,856.88 is: 19,109.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,625.01 : 25,685.46 = 13,856.88 : x
  2. Step 2: Convert to fraction form
    18,625.01/25,685.46 = 13,856.88/x
  3. Step 3: Cross multiply
    18,625.01x = 25,685.46 × 13,856.88
  4. Step 4: Simplify right side
    18,625.01x = 355,920,336.96
  5. Step 5: Solve for x
    x = 355,920,336.96/18,625.01
  6. Step 6: Final answer
    x = 19,109.81

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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.