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Finding the Fourth Proportional to 51,894.80, 77,833.62 and 18,609.80

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Solution

The fourth proportional to 51,894.80, 77,833.62 and 18,609.80 is: 27,911.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,894.80 : 77,833.62 = 18,609.80 : x
  2. Step 2: Convert to fraction form
    51,894.80/77,833.62 = 18,609.80/x
  3. Step 3: Cross multiply
    51,894.80x = 77,833.62 × 18,609.80
  4. Step 4: Simplify right side
    51,894.80x = 1,448,468,101.48
  5. Step 5: Solve for x
    x = 1,448,468,101.48/51,894.80
  6. Step 6: Final answer
    x = 27,911.62

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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.