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Finding the Fourth Proportional to 92,326.56, 138,445.92 and 47,908.80

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Solution

The fourth proportional to 92,326.56, 138,445.92 and 47,908.80 is: 71,840.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,326.56 : 138,445.92 = 47,908.80 : x
  2. Step 2: Convert to fraction form
    92,326.56/138,445.92 = 47,908.80/x
  3. Step 3: Cross multiply
    92,326.56x = 138,445.92 × 47,908.80
  4. Step 4: Simplify right side
    92,326.56x = 6,632,777,892.10
  5. Step 5: Solve for x
    x = 6,632,777,892.10/92,326.56
  6. Step 6: Final answer
    x = 71,840.41

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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.