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Finding the Fourth Proportional to 8,272.49, 11,415.68 and 4,735.22

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Solution

The fourth proportional to 8,272.49, 11,415.68 and 4,735.22 is: 6,534.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,272.49 : 11,415.68 = 4,735.22 : x
  2. Step 2: Convert to fraction form
    8,272.49/11,415.68 = 4,735.22/x
  3. Step 3: Cross multiply
    8,272.49x = 11,415.68 × 4,735.22
  4. Step 4: Simplify right side
    8,272.49x = 54,055,675.50
  5. Step 5: Solve for x
    x = 54,055,675.50/8,272.49
  6. Step 6: Final answer
    x = 6,534.39

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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.