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Finding the Fourth Proportional to 8,615.22, 11,949.42 and 8,265.30

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Solution

The fourth proportional to 8,615.22, 11,949.42 and 8,265.30 is: 11,464.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,615.22 : 11,949.42 = 8,265.30 : x
  2. Step 2: Convert to fraction form
    8,615.22/11,949.42 = 8,265.30/x
  3. Step 3: Cross multiply
    8,615.22x = 11,949.42 × 8,265.30
  4. Step 4: Simplify right side
    8,615.22x = 98,765,541.13
  5. Step 5: Solve for x
    x = 98,765,541.13/8,615.22
  6. Step 6: Final answer
    x = 11,464.08

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.