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Finding the Fourth Proportional to 171,579.30, 257,402.97 and 53,245.59

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Solution

The fourth proportional to 171,579.30, 257,402.97 and 53,245.59 is: 79,878.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,579.30 : 257,402.97 = 53,245.59 : x
  2. Step 2: Convert to fraction form
    171,579.30/257,402.97 = 53,245.59/x
  3. Step 3: Cross multiply
    171,579.30x = 257,402.97 × 53,245.59
  4. Step 4: Simplify right side
    171,579.30x = 13,705,573,005.40
  5. Step 5: Solve for x
    x = 13,705,573,005.40/171,579.30
  6. Step 6: Final answer
    x = 79,878.94

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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.