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Finding the Fourth Proportional to 18,300.52, 27,435.78 and 11,725

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Solution

The fourth proportional to 18,300.52, 27,435.78 and 11,725 is: 17,577.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,300.52 : 27,435.78 = 11,725 : x
  2. Step 2: Convert to fraction form
    18,300.52/27,435.78 = 11,725/x
  3. Step 3: Cross multiply
    18,300.52x = 27,435.78 × 11,725
  4. Step 4: Simplify right side
    18,300.52x = 321,684,520.50
  5. Step 5: Solve for x
    x = 321,684,520.50/18,300.52
  6. Step 6: Final answer
    x = 17,577.89

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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.