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Finding the Fourth Proportional to 92,261, 138,293.10 and 39,674.60

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Solution

The fourth proportional to 92,261, 138,293.10 and 39,674.60 is: 59,469.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,261 : 138,293.10 = 39,674.60 : x
  2. Step 2: Convert to fraction form
    92,261/138,293.10 = 39,674.60/x
  3. Step 3: Cross multiply
    92,261x = 138,293.10 × 39,674.60
  4. Step 4: Simplify right side
    92,261x = 5,486,723,425.26
  5. Step 5: Solve for x
    x = 5,486,723,425.26/92,261
  6. Step 6: Final answer
    x = 59,469.59

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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.