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Finding the Fourth Proportional to 66,517.92, 99,776.60 and 27,065.68

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Solution

The fourth proportional to 66,517.92, 99,776.60 and 27,065.68 is: 40,598.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,517.92 : 99,776.60 = 27,065.68 : x
  2. Step 2: Convert to fraction form
    66,517.92/99,776.60 = 27,065.68/x
  3. Step 3: Cross multiply
    66,517.92x = 99,776.60 × 27,065.68
  4. Step 4: Simplify right side
    66,517.92x = 2,700,521,527.09
  5. Step 5: Solve for x
    x = 2,700,521,527.09/66,517.92
  6. Step 6: Final answer
    x = 40,598.41

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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.