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Finding the Fourth Proportional to 9,168.87, 13,755.21 and 4,168.86

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Solution

The fourth proportional to 9,168.87, 13,755.21 and 4,168.86 is: 6,254.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,168.87 : 13,755.21 = 4,168.86 : x
  2. Step 2: Convert to fraction form
    9,168.87/13,755.21 = 4,168.86/x
  3. Step 3: Cross multiply
    9,168.87x = 13,755.21 × 4,168.86
  4. Step 4: Simplify right side
    9,168.87x = 57,343,544.76
  5. Step 5: Solve for x
    x = 57,343,544.76/9,168.87
  6. Step 6: Final answer
    x = 6,254.16

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.