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Finding the Fourth Proportional to 66,657.72, 99,986.48 and 26,694.70

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Solution

The fourth proportional to 66,657.72, 99,986.48 and 26,694.70 is: 40,042.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,657.72 : 99,986.48 = 26,694.70 : x
  2. Step 2: Convert to fraction form
    66,657.72/99,986.48 = 26,694.70/x
  3. Step 3: Cross multiply
    66,657.72x = 99,986.48 × 26,694.70
  4. Step 4: Simplify right side
    66,657.72x = 2,669,109,087.66
  5. Step 5: Solve for x
    x = 2,669,109,087.66/66,657.72
  6. Step 6: Final answer
    x = 40,042.01

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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.