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Finding the Fourth Proportional to 8,692.96, 11,987.60 and 5,548

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Solution

The fourth proportional to 8,692.96, 11,987.60 and 5,548 is: 7,650.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,692.96 : 11,987.60 = 5,548 : x
  2. Step 2: Convert to fraction form
    8,692.96/11,987.60 = 5,548/x
  3. Step 3: Cross multiply
    8,692.96x = 11,987.60 × 5,548
  4. Step 4: Simplify right side
    8,692.96x = 66,507,204.80
  5. Step 5: Solve for x
    x = 66,507,204.80/8,692.96
  6. Step 6: Final answer
    x = 7,650.70

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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.