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Finding the Fourth Proportional to 19,995.88, 27,579.40 and 17,729.88

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Solution

The fourth proportional to 19,995.88, 27,579.40 and 17,729.88 is: 24,454.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,995.88 : 27,579.40 = 17,729.88 : x
  2. Step 2: Convert to fraction form
    19,995.88/27,579.40 = 17,729.88/x
  3. Step 3: Cross multiply
    19,995.88x = 27,579.40 × 17,729.88
  4. Step 4: Simplify right side
    19,995.88x = 488,979,452.47
  5. Step 5: Solve for x
    x = 488,979,452.47/19,995.88
  6. Step 6: Final answer
    x = 24,454.01

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1.5x scale

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.