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Finding the Fourth Proportional to 171,450.72, 257,103.92 and 64,816.64

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Solution

The fourth proportional to 171,450.72, 257,103.92 and 64,816.64 is: 97,197.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,450.72 : 257,103.92 = 64,816.64 : x
  2. Step 2: Convert to fraction form
    171,450.72/257,103.92 = 64,816.64/x
  3. Step 3: Cross multiply
    171,450.72x = 257,103.92 × 64,816.64
  4. Step 4: Simplify right side
    171,450.72x = 16,664,612,225.23
  5. Step 5: Solve for x
    x = 16,664,612,225.23/171,450.72
  6. Step 6: Final answer
    x = 97,197.68

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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.