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Finding the Fourth Proportional to 9,168.68, 12,652.54 and 5,189.68

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Solution

The fourth proportional to 9,168.68, 12,652.54 and 5,189.68 is: 7,161.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,168.68 : 12,652.54 = 5,189.68 : x
  2. Step 2: Convert to fraction form
    9,168.68/12,652.54 = 5,189.68/x
  3. Step 3: Cross multiply
    9,168.68x = 12,652.54 × 5,189.68
  4. Step 4: Simplify right side
    9,168.68x = 65,662,633.79
  5. Step 5: Solve for x
    x = 65,662,633.79/9,168.68
  6. Step 6: Final answer
    x = 7,161.62

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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.