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Finding the Fourth Proportional to 139,393.56, 193,350.08 and 134,614.32

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Solution

The fourth proportional to 139,393.56, 193,350.08 and 134,614.32 is: 186,720.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,393.56 : 193,350.08 = 134,614.32 : x
  2. Step 2: Convert to fraction form
    139,393.56/193,350.08 = 134,614.32/x
  3. Step 3: Cross multiply
    139,393.56x = 193,350.08 × 134,614.32
  4. Step 4: Simplify right side
    139,393.56x = 26,027,689,541.15
  5. Step 5: Solve for x
    x = 26,027,689,541.15/139,393.56
  6. Step 6: Final answer
    x = 186,720.89

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.