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Finding the Fourth Proportional to 18,063.12, 24,919.20 and 13,864.08

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Solution

The fourth proportional to 18,063.12, 24,919.20 and 13,864.08 is: 19,126.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,063.12 : 24,919.20 = 13,864.08 : x
  2. Step 2: Convert to fraction form
    18,063.12/24,919.20 = 13,864.08/x
  3. Step 3: Cross multiply
    18,063.12x = 24,919.20 × 13,864.08
  4. Step 4: Simplify right side
    18,063.12x = 345,481,782.34
  5. Step 5: Solve for x
    x = 345,481,782.34/18,063.12
  6. Step 6: Final answer
    x = 19,126.36

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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.