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Finding the Fourth Proportional to 17,639.12, 26,447.92 and 7,495.55

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Solution

The fourth proportional to 17,639.12, 26,447.92 and 7,495.55 is: 11,238.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,639.12 : 26,447.92 = 7,495.55 : x
  2. Step 2: Convert to fraction form
    17,639.12/26,447.92 = 7,495.55/x
  3. Step 3: Cross multiply
    17,639.12x = 26,447.92 × 7,495.55
  4. Step 4: Simplify right side
    17,639.12x = 198,241,654.96
  5. Step 5: Solve for x
    x = 198,241,654.96/17,639.12
  6. Step 6: Final answer
    x = 11,238.75

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1.5x scale

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.