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Finding the Fourth Proportional to 151,082.40, 226,429.20 and 91,855.20

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Solution

The fourth proportional to 151,082.40, 226,429.20 and 91,855.20 is: 137,664.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,082.40 : 226,429.20 = 91,855.20 : x
  2. Step 2: Convert to fraction form
    151,082.40/226,429.20 = 91,855.20/x
  3. Step 3: Cross multiply
    151,082.40x = 226,429.20 × 91,855.20
  4. Step 4: Simplify right side
    151,082.40x = 20,798,699,451.84
  5. Step 5: Solve for x
    x = 20,798,699,451.84/151,082.40
  6. Step 6: Final answer
    x = 137,664.61

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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.