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Finding the Fourth Proportional to 61,425.31, 92,134.21 and 36,138.82

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Solution

The fourth proportional to 61,425.31, 92,134.21 and 36,138.82 is: 54,206.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,425.31 : 92,134.21 = 36,138.82 : x
  2. Step 2: Convert to fraction form
    61,425.31/92,134.21 = 36,138.82/x
  3. Step 3: Cross multiply
    61,425.31x = 92,134.21 × 36,138.82
  4. Step 4: Simplify right side
    61,425.31x = 3,329,621,631.03
  5. Step 5: Solve for x
    x = 3,329,621,631.03/61,425.31
  6. Step 6: Final answer
    x = 54,206.02

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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.