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Finding the Fourth Proportional to 171,806.77, 257,786.70 and 66,633.94

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Solution

The fourth proportional to 171,806.77, 257,786.70 and 66,633.94 is: 99,980.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,806.77 : 257,786.70 = 66,633.94 : x
  2. Step 2: Convert to fraction form
    171,806.77/257,786.70 = 66,633.94/x
  3. Step 3: Cross multiply
    171,806.77x = 257,786.70 × 66,633.94
  4. Step 4: Simplify right side
    171,806.77x = 17,177,341,878.49
  5. Step 5: Solve for x
    x = 17,177,341,878.49/171,806.77
  6. Step 6: Final answer
    x = 99,980.59

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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.