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Finding the Fourth Proportional to 171,693.20, 257,466.90 and 82,973.90

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Solution

The fourth proportional to 171,693.20, 257,466.90 and 82,973.90 is: 124,425.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,693.20 : 257,466.90 = 82,973.90 : x
  2. Step 2: Convert to fraction form
    171,693.20/257,466.90 = 82,973.90/x
  3. Step 3: Cross multiply
    171,693.20x = 257,466.90 × 82,973.90
  4. Step 4: Simplify right side
    171,693.20x = 21,363,032,813.91
  5. Step 5: Solve for x
    x = 21,363,032,813.91/171,693.20
  6. Step 6: Final answer
    x = 124,425.62

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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.