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Finding the Fourth Proportional to 19,714.80, 27,204.04 and 11,218.01

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Solution

The fourth proportional to 19,714.80, 27,204.04 and 11,218.01 is: 15,479.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,714.80 : 27,204.04 = 11,218.01 : x
  2. Step 2: Convert to fraction form
    19,714.80/27,204.04 = 11,218.01/x
  3. Step 3: Cross multiply
    19,714.80x = 27,204.04 × 11,218.01
  4. Step 4: Simplify right side
    19,714.80x = 305,175,007.66
  5. Step 5: Solve for x
    x = 305,175,007.66/19,714.80
  6. Step 6: Final answer
    x = 15,479.48

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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.