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Finding the Fourth Proportional to 55,252.70, 82,900.65 and 20,195.90

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Solution

The fourth proportional to 55,252.70, 82,900.65 and 20,195.90 is: 30,301.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,252.70 : 82,900.65 = 20,195.90 : x
  2. Step 2: Convert to fraction form
    55,252.70/82,900.65 = 20,195.90/x
  3. Step 3: Cross multiply
    55,252.70x = 82,900.65 × 20,195.90
  4. Step 4: Simplify right side
    55,252.70x = 1,674,253,237.34
  5. Step 5: Solve for x
    x = 1,674,253,237.34/55,252.70
  6. Step 6: Final answer
    x = 30,301.75

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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.