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Finding the Fourth Proportional to 17,809.88, 26,717.70 and 7,422.68

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Solution

The fourth proportional to 17,809.88, 26,717.70 and 7,422.68 is: 11,135.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,809.88 : 26,717.70 = 7,422.68 : x
  2. Step 2: Convert to fraction form
    17,809.88/26,717.70 = 7,422.68/x
  3. Step 3: Cross multiply
    17,809.88x = 26,717.70 × 7,422.68
  4. Step 4: Simplify right side
    17,809.88x = 198,316,937.44
  5. Step 5: Solve for x
    x = 198,316,937.44/17,809.88
  6. Step 6: Final answer
    x = 11,135.22

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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.