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Finding the Fourth Proportional to 92,080.80, 137,926.80 and 76,528.80

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Solution

The fourth proportional to 92,080.80, 137,926.80 and 76,528.80 is: 114,631.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,080.80 : 137,926.80 = 76,528.80 : x
  2. Step 2: Convert to fraction form
    92,080.80/137,926.80 = 76,528.80/x
  3. Step 3: Cross multiply
    92,080.80x = 137,926.80 × 76,528.80
  4. Step 4: Simplify right side
    92,080.80x = 10,555,372,491.84
  5. Step 5: Solve for x
    x = 10,555,372,491.84/92,080.80
  6. Step 6: Final answer
    x = 114,631.63

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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.