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Finding the Fourth Proportional to 66,164.99, 99,191.69 and 28,696.84

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Solution

The fourth proportional to 66,164.99, 99,191.69 and 28,696.84 is: 43,021.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,164.99 : 99,191.69 = 28,696.84 : x
  2. Step 2: Convert to fraction form
    66,164.99/99,191.69 = 28,696.84/x
  3. Step 3: Cross multiply
    66,164.99x = 99,191.69 × 28,696.84
  4. Step 4: Simplify right side
    66,164.99x = 2,846,487,773.41
  5. Step 5: Solve for x
    x = 2,846,487,773.41/66,164.99
  6. Step 6: Final answer
    x = 43,021.06

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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.