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Finding the Fourth Proportional to 18,656.57, 25,745.46 and 11,101.16

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Solution

The fourth proportional to 18,656.57, 25,745.46 and 11,101.16 is: 15,319.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,656.57 : 25,745.46 = 11,101.16 : x
  2. Step 2: Convert to fraction form
    18,656.57/25,745.46 = 11,101.16/x
  3. Step 3: Cross multiply
    18,656.57x = 25,745.46 × 11,101.16
  4. Step 4: Simplify right side
    18,656.57x = 285,804,415.23
  5. Step 5: Solve for x
    x = 285,804,415.23/18,656.57
  6. Step 6: Final answer
    x = 15,319.24

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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.