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Finding the Fourth Proportional to 18,805.19, 28,219.50 and 17,053.36

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Solution

The fourth proportional to 18,805.19, 28,219.50 and 17,053.36 is: 25,590.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,805.19 : 28,219.50 = 17,053.36 : x
  2. Step 2: Convert to fraction form
    18,805.19/28,219.50 = 17,053.36/x
  3. Step 3: Cross multiply
    18,805.19x = 28,219.50 × 17,053.36
  4. Step 4: Simplify right side
    18,805.19x = 481,237,151.42
  5. Step 5: Solve for x
    x = 481,237,151.42/18,805.19
  6. Step 6: Final answer
    x = 25,590.66

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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.