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Finding the Fourth Proportional to 139,043.25, 206,776.22 and 134,614.53

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Solution

The fourth proportional to 139,043.25, 206,776.22 and 134,614.53 is: 200,190.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,043.25 : 206,776.22 = 134,614.53 : x
  2. Step 2: Convert to fraction form
    139,043.25/206,776.22 = 134,614.53/x
  3. Step 3: Cross multiply
    139,043.25x = 206,776.22 × 134,614.53
  4. Step 4: Simplify right side
    139,043.25x = 27,835,082,997.40
  5. Step 5: Solve for x
    x = 27,835,082,997.40/139,043.25
  6. Step 6: Final answer
    x = 200,190.11

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.