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Finding the Fourth Proportional to 66,491.04, 91,757.12 and 36,275.92

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Solution

The fourth proportional to 66,491.04, 91,757.12 and 36,275.92 is: 50,060.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,491.04 : 91,757.12 = 36,275.92 : x
  2. Step 2: Convert to fraction form
    66,491.04/91,757.12 = 36,275.92/x
  3. Step 3: Cross multiply
    66,491.04x = 91,757.12 × 36,275.92
  4. Step 4: Simplify right side
    66,491.04x = 3,328,573,944.55
  5. Step 5: Solve for x
    x = 3,328,573,944.55/66,491.04
  6. Step 6: Final answer
    x = 50,060.49

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.