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Finding the Fourth Proportional to 166,782.59, 250,172.31 and 72,079.73

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Solution

The fourth proportional to 166,782.59, 250,172.31 and 72,079.73 is: 108,118.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    166,782.59 : 250,172.31 = 72,079.73 : x
  2. Step 2: Convert to fraction form
    166,782.59/250,172.31 = 72,079.73/x
  3. Step 3: Cross multiply
    166,782.59x = 250,172.31 × 72,079.73
  4. Step 4: Simplify right side
    166,782.59x = 18,032,351,307.41
  5. Step 5: Solve for x
    x = 18,032,351,307.41/166,782.59
  6. Step 6: Final answer
    x = 108,118.91

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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.