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Finding the Fourth Proportional to 107,615.80, 161,229.30 and 92,063.80

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Solution

The fourth proportional to 107,615.80, 161,229.30 and 92,063.80 is: 137,929.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,615.80 : 161,229.30 = 92,063.80 : x
  2. Step 2: Convert to fraction form
    107,615.80/161,229.30 = 92,063.80/x
  3. Step 3: Cross multiply
    107,615.80x = 161,229.30 × 92,063.80
  4. Step 4: Simplify right side
    107,615.80x = 14,843,382,029.34
  5. Step 5: Solve for x
    x = 14,843,382,029.34/107,615.80
  6. Step 6: Final answer
    x = 137,929.39

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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.