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Finding the Fourth Proportional to 66,657.79, 99,986.78 and 26,694.77

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Solution

The fourth proportional to 66,657.79, 99,986.78 and 26,694.77 is: 40,042.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,657.79 : 99,986.78 = 26,694.77 : x
  2. Step 2: Convert to fraction form
    66,657.79/99,986.78 = 26,694.77/x
  3. Step 3: Cross multiply
    66,657.79x = 99,986.78 × 26,694.77
  4. Step 4: Simplify right side
    66,657.79x = 2,669,124,095.14
  5. Step 5: Solve for x
    x = 2,669,124,095.14/66,657.79
  6. Step 6: Final answer
    x = 40,042.19

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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.