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Finding the Fourth Proportional to 124,311.90, 186,467.85 and 57,729.90

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Solution

The fourth proportional to 124,311.90, 186,467.85 and 57,729.90 is: 86,594.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,311.90 : 186,467.85 = 57,729.90 : x
  2. Step 2: Convert to fraction form
    124,311.90/186,467.85 = 57,729.90/x
  3. Step 3: Cross multiply
    124,311.90x = 186,467.85 × 57,729.90
  4. Step 4: Simplify right side
    124,311.90x = 10,764,770,333.72
  5. Step 5: Solve for x
    x = 10,764,770,333.72/124,311.90
  6. Step 6: Final answer
    x = 86,594.85

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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.