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Finding the Fourth Proportional to 171,940.70, 257,911.05 and 101,783.90

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Solution

The fourth proportional to 171,940.70, 257,911.05 and 101,783.90 is: 152,675.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,940.70 : 257,911.05 = 101,783.90 : x
  2. Step 2: Convert to fraction form
    171,940.70/257,911.05 = 101,783.90/x
  3. Step 3: Cross multiply
    171,940.70x = 257,911.05 × 101,783.90
  4. Step 4: Simplify right side
    171,940.70x = 26,251,192,522.10
  5. Step 5: Solve for x
    x = 26,251,192,522.10/171,940.70
  6. Step 6: Final answer
    x = 152,675.85

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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.