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Finding the Fourth Proportional to 18,352.86, 25,319.48 and 11,977.24

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Solution

The fourth proportional to 18,352.86, 25,319.48 and 11,977.24 is: 16,523.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,352.86 : 25,319.48 = 11,977.24 : x
  2. Step 2: Convert to fraction form
    18,352.86/25,319.48 = 11,977.24/x
  3. Step 3: Cross multiply
    18,352.86x = 25,319.48 × 11,977.24
  4. Step 4: Simplify right side
    18,352.86x = 303,257,543.09
  5. Step 5: Solve for x
    x = 303,257,543.09/18,352.86
  6. Step 6: Final answer
    x = 16,523.72

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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.