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Finding the Fourth Proportional to 99,551.72, 149,237.94 and 36,327.72

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Solution

The fourth proportional to 99,551.72, 149,237.94 and 36,327.72 is: 54,458.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,551.72 : 149,237.94 = 36,327.72 : x
  2. Step 2: Convert to fraction form
    99,551.72/149,237.94 = 36,327.72/x
  3. Step 3: Cross multiply
    99,551.72x = 149,237.94 × 36,327.72
  4. Step 4: Simplify right side
    99,551.72x = 5,421,474,097.70
  5. Step 5: Solve for x
    x = 5,421,474,097.70/99,551.72
  6. Step 6: Final answer
    x = 54,458.87

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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.