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Finding the Fourth Proportional to 171,889.80, 257,834.70 and 53,570.64

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Solution

The fourth proportional to 171,889.80, 257,834.70 and 53,570.64 is: 80,355.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,889.80 : 257,834.70 = 53,570.64 : x
  2. Step 2: Convert to fraction form
    171,889.80/257,834.70 = 53,570.64/x
  3. Step 3: Cross multiply
    171,889.80x = 257,834.70 × 53,570.64
  4. Step 4: Simplify right side
    171,889.80x = 13,812,369,893.21
  5. Step 5: Solve for x
    x = 13,812,369,893.21/171,889.80
  6. Step 6: Final answer
    x = 80,355.96

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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.