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Finding the Fourth Proportional to 18,656.50, 25,745.37 and 11,101.10

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Solution

The fourth proportional to 18,656.50, 25,745.37 and 11,101.10 is: 15,319.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,656.50 : 25,745.37 = 11,101.10 : x
  2. Step 2: Convert to fraction form
    18,656.50/25,745.37 = 11,101.10/x
  3. Step 3: Cross multiply
    18,656.50x = 25,745.37 × 11,101.10
  4. Step 4: Simplify right side
    18,656.50x = 285,801,926.91
  5. Step 5: Solve for x
    x = 285,801,926.91/18,656.50
  6. Step 6: Final answer
    x = 15,319.16

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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.