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Finding the Fourth Proportional to 5,666.76, 8,500.15 and 2,155.96

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Solution

The fourth proportional to 5,666.76, 8,500.15 and 2,155.96 is: 3,233.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,666.76 : 8,500.15 = 2,155.96 : x
  2. Step 2: Convert to fraction form
    5,666.76/8,500.15 = 2,155.96/x
  3. Step 3: Cross multiply
    5,666.76x = 8,500.15 × 2,155.96
  4. Step 4: Simplify right side
    5,666.76x = 18,325,983.39
  5. Step 5: Solve for x
    x = 18,325,983.39/5,666.76
  6. Step 6: Final answer
    x = 3,233.94

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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.