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Finding the Fourth Proportional to 92,406.90, 138,609.93 and 36,207.30

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Solution

The fourth proportional to 92,406.90, 138,609.93 and 36,207.30 is: 54,310.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,406.90 : 138,609.93 = 36,207.30 : x
  2. Step 2: Convert to fraction form
    92,406.90/138,609.93 = 36,207.30/x
  3. Step 3: Cross multiply
    92,406.90x = 138,609.93 × 36,207.30
  4. Step 4: Simplify right side
    92,406.90x = 5,018,691,318.49
  5. Step 5: Solve for x
    x = 5,018,691,318.49/92,406.90
  6. Step 6: Final answer
    x = 54,310.79

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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.