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Finding the Fourth Proportional to 8,187.75, 11,299.10 and 4,461.75

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Solution

The fourth proportional to 8,187.75, 11,299.10 and 4,461.75 is: 6,157.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,187.75 : 11,299.10 = 4,461.75 : x
  2. Step 2: Convert to fraction form
    8,187.75/11,299.10 = 4,461.75/x
  3. Step 3: Cross multiply
    8,187.75x = 11,299.10 × 4,461.75
  4. Step 4: Simplify right side
    8,187.75x = 50,413,737.12
  5. Step 5: Solve for x
    x = 50,413,737.12/8,187.75
  6. Step 6: Final answer
    x = 6,157.22

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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.