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Finding the Fourth Proportional to 135,925.92, 203,892.48 and 80,158.32

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Solution

The fourth proportional to 135,925.92, 203,892.48 and 80,158.32 is: 120,239.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,925.92 : 203,892.48 = 80,158.32 : x
  2. Step 2: Convert to fraction form
    135,925.92/203,892.48 = 80,158.32/x
  3. Step 3: Cross multiply
    135,925.92x = 203,892.48 × 80,158.32
  4. Step 4: Simplify right side
    135,925.92x = 16,343,678,657.43
  5. Step 5: Solve for x
    x = 16,343,678,657.43/135,925.92
  6. Step 6: Final answer
    x = 120,239.60

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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.