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Finding the Fourth Proportional to 55,291.80, 82,929.60 and 15,844.80

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Solution

The fourth proportional to 55,291.80, 82,929.60 and 15,844.80 is: 23,764.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,291.80 : 82,929.60 = 15,844.80 : x
  2. Step 2: Convert to fraction form
    55,291.80/82,929.60 = 15,844.80/x
  3. Step 3: Cross multiply
    55,291.80x = 82,929.60 × 15,844.80
  4. Step 4: Simplify right side
    55,291.80x = 1,314,002,926.08
  5. Step 5: Solve for x
    x = 1,314,002,926.08/55,291.80
  6. Step 6: Final answer
    x = 23,764.88

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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.