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Finding the Fourth Proportional to 18,556.68, 27,801.52 and 12,301.88

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Solution

The fourth proportional to 18,556.68, 27,801.52 and 12,301.88 is: 18,430.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,556.68 : 27,801.52 = 12,301.88 : x
  2. Step 2: Convert to fraction form
    18,556.68/27,801.52 = 12,301.88/x
  3. Step 3: Cross multiply
    18,556.68x = 27,801.52 × 12,301.88
  4. Step 4: Simplify right side
    18,556.68x = 342,010,962.86
  5. Step 5: Solve for x
    x = 342,010,962.86/18,556.68
  6. Step 6: Final answer
    x = 18,430.61

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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.