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Finding the Fourth Proportional to 111,748.85, 154,213.41 and 61,447.85

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Solution

The fourth proportional to 111,748.85, 154,213.41 and 61,447.85 is: 84,798.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,748.85 : 154,213.41 = 61,447.85 : x
  2. Step 2: Convert to fraction form
    111,748.85/154,213.41 = 61,447.85/x
  3. Step 3: Cross multiply
    111,748.85x = 154,213.41 × 61,447.85
  4. Step 4: Simplify right side
    111,748.85x = 9,476,081,560.98
  5. Step 5: Solve for x
    x = 9,476,081,560.98/111,748.85
  6. Step 6: Final answer
    x = 84,798.03

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.