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Finding the Fourth Proportional to 92,011.20, 137,725.20 and 65,767.20

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Solution

The fourth proportional to 92,011.20, 137,725.20 and 65,767.20 is: 98,442.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,011.20 : 137,725.20 = 65,767.20 : x
  2. Step 2: Convert to fraction form
    92,011.20/137,725.20 = 65,767.20/x
  3. Step 3: Cross multiply
    92,011.20x = 137,725.20 × 65,767.20
  4. Step 4: Simplify right side
    92,011.20x = 9,057,800,773.44
  5. Step 5: Solve for x
    x = 9,057,800,773.44/92,011.20
  6. Step 6: Final answer
    x = 98,442.37

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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.