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Finding the Fourth Proportional to 17,902.72, 26,839.68 and 12,695.68

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Solution

The fourth proportional to 17,902.72, 26,839.68 and 12,695.68 is: 19,033.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,902.72 : 26,839.68 = 12,695.68 : x
  2. Step 2: Convert to fraction form
    17,902.72/26,839.68 = 12,695.68/x
  3. Step 3: Cross multiply
    17,902.72x = 26,839.68 × 12,695.68
  4. Step 4: Simplify right side
    17,902.72x = 340,747,988.58
  5. Step 5: Solve for x
    x = 340,747,988.58/17,902.72
  6. Step 6: Final answer
    x = 19,033.31

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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.