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Finding the Fourth Proportional to 111,977.41, 154,528.81 and 61,676.41

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Solution

The fourth proportional to 111,977.41, 154,528.81 and 61,676.41 is: 85,113.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,977.41 : 154,528.81 = 61,676.41 : x
  2. Step 2: Convert to fraction form
    111,977.41/154,528.81 = 61,676.41/x
  3. Step 3: Cross multiply
    111,977.41x = 154,528.81 × 61,676.41
  4. Step 4: Simplify right side
    111,977.41x = 9,530,782,242.37
  5. Step 5: Solve for x
    x = 9,530,782,242.37/111,977.41
  6. Step 6: Final answer
    x = 85,113.44

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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.