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Finding the Fourth Proportional to 8,608.68, 11,880.54 and 5,072.22

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Solution

The fourth proportional to 8,608.68, 11,880.54 and 5,072.22 is: 6,999.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,608.68 : 11,880.54 = 5,072.22 : x
  2. Step 2: Convert to fraction form
    8,608.68/11,880.54 = 5,072.22/x
  3. Step 3: Cross multiply
    8,608.68x = 11,880.54 × 5,072.22
  4. Step 4: Simplify right side
    8,608.68x = 60,260,712.60
  5. Step 5: Solve for x
    x = 60,260,712.60/8,608.68
  6. Step 6: Final answer
    x = 6,999.99

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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.