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Finding the Fourth Proportional to 18,656.42, 25,745.82 and 10,272.92

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Solution

The fourth proportional to 18,656.42, 25,745.82 and 10,272.92 is: 14,176.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,656.42 : 25,745.82 = 10,272.92 : x
  2. Step 2: Convert to fraction form
    18,656.42/25,745.82 = 10,272.92/x
  3. Step 3: Cross multiply
    18,656.42x = 25,745.82 × 10,272.92
  4. Step 4: Simplify right side
    18,656.42x = 264,484,620.47
  5. Step 5: Solve for x
    x = 264,484,620.47/18,656.42
  6. Step 6: Final answer
    x = 14,176.60

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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.