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Finding the Fourth Proportional to 66,963.92, 92,472.45 and 43,131.56

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Solution

The fourth proportional to 66,963.92, 92,472.45 and 43,131.56 is: 59,561.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,963.92 : 92,472.45 = 43,131.56 : x
  2. Step 2: Convert to fraction form
    66,963.92/92,472.45 = 43,131.56/x
  3. Step 3: Cross multiply
    66,963.92x = 92,472.45 × 43,131.56
  4. Step 4: Simplify right side
    66,963.92x = 3,988,481,025.52
  5. Step 5: Solve for x
    x = 3,988,481,025.52/66,963.92
  6. Step 6: Final answer
    x = 59,561.64

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1.5x scale

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.