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Finding the Fourth Proportional to 92,325.53, 138,439.08 and 47,907.56

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Solution

The fourth proportional to 92,325.53, 138,439.08 and 47,907.56 is: 71,835.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,325.53 : 138,439.08 = 47,907.56 : x
  2. Step 2: Convert to fraction form
    92,325.53/138,439.08 = 47,907.56/x
  3. Step 3: Cross multiply
    92,325.53x = 138,439.08 × 47,907.56
  4. Step 4: Simplify right side
    92,325.53x = 6,632,278,531.44
  5. Step 5: Solve for x
    x = 6,632,278,531.44/92,325.53
  6. Step 6: Final answer
    x = 71,835.80

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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.