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Finding the Fourth Proportional to 18,980.52, 26,192.80 and 11,027.20

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Solution

The fourth proportional to 18,980.52, 26,192.80 and 11,027.20 is: 15,217.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,980.52 : 26,192.80 = 11,027.20 : x
  2. Step 2: Convert to fraction form
    18,980.52/26,192.80 = 11,027.20/x
  3. Step 3: Cross multiply
    18,980.52x = 26,192.80 × 11,027.20
  4. Step 4: Simplify right side
    18,980.52x = 288,833,244.16
  5. Step 5: Solve for x
    x = 288,833,244.16/18,980.52
  6. Step 6: Final answer
    x = 15,217.35

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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.