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Finding the Fourth Proportional to 171,866.16, 257,811.57 and 71,925.75

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Solution

The fourth proportional to 171,866.16, 257,811.57 and 71,925.75 is: 107,893.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,866.16 : 257,811.57 = 71,925.75 : x
  2. Step 2: Convert to fraction form
    171,866.16/257,811.57 = 71,925.75/x
  3. Step 3: Cross multiply
    171,866.16x = 257,811.57 × 71,925.75
  4. Step 4: Simplify right side
    171,866.16x = 18,543,290,530.93
  5. Step 5: Solve for x
    x = 18,543,290,530.93/171,866.16
  6. Step 6: Final answer
    x = 107,893.79

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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.