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Finding the Fourth Proportional to 171,579.55, 257,403.35 and 53,245.84

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Solution

The fourth proportional to 171,579.55, 257,403.35 and 53,245.84 is: 79,879.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,579.55 : 257,403.35 = 53,245.84 : x
  2. Step 2: Convert to fraction form
    171,579.55/257,403.35 = 53,245.84/x
  3. Step 3: Cross multiply
    171,579.55x = 257,403.35 × 53,245.84
  4. Step 4: Simplify right side
    171,579.55x = 13,705,657,323.33
  5. Step 5: Solve for x
    x = 13,705,657,323.33/171,579.55
  6. Step 6: Final answer
    x = 79,879.32

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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.