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Finding the Fourth Proportional to 143,651.44, 215,460.69 and 54,902.98

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Solution

The fourth proportional to 143,651.44, 215,460.69 and 54,902.98 is: 82,348.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,651.44 : 215,460.69 = 54,902.98 : x
  2. Step 2: Convert to fraction form
    143,651.44/215,460.69 = 54,902.98/x
  3. Step 3: Cross multiply
    143,651.44x = 215,460.69 × 54,902.98
  4. Step 4: Simplify right side
    143,651.44x = 11,829,433,953.86
  5. Step 5: Solve for x
    x = 11,829,433,953.86/143,651.44
  6. Step 6: Final answer
    x = 82,348.18

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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.