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Finding the Fourth Proportional to 67,239, 92,796.30 and 37,431

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Solution

The fourth proportional to 67,239, 92,796.30 and 37,431 is: 51,658.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,239 : 92,796.30 = 37,431 : x
  2. Step 2: Convert to fraction form
    67,239/92,796.30 = 37,431/x
  3. Step 3: Cross multiply
    67,239x = 92,796.30 × 37,431
  4. Step 4: Simplify right side
    67,239x = 3,473,458,305.30
  5. Step 5: Solve for x
    x = 3,473,458,305.30/67,239
  6. Step 6: Final answer
    x = 51,658.39

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.