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Finding the Fourth Proportional to 66,440.97, 91,695.66 and 40,941.90

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Solution

The fourth proportional to 66,440.97, 91,695.66 and 40,941.90 is: 56,504.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,440.97 : 91,695.66 = 40,941.90 : x
  2. Step 2: Convert to fraction form
    66,440.97/91,695.66 = 40,941.90/x
  3. Step 3: Cross multiply
    66,440.97x = 91,695.66 × 40,941.90
  4. Step 4: Simplify right side
    66,440.97x = 3,754,194,542.15
  5. Step 5: Solve for x
    x = 3,754,194,542.15/66,440.97
  6. Step 6: Final answer
    x = 56,504.21

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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.