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Finding the Fourth Proportional to 66,543.55, 91,825.97 and 36,322.70

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Solution

The fourth proportional to 66,543.55, 91,825.97 and 36,322.70 is: 50,123.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,543.55 : 91,825.97 = 36,322.70 : x
  2. Step 2: Convert to fraction form
    66,543.55/91,825.97 = 36,322.70/x
  3. Step 3: Cross multiply
    66,543.55x = 91,825.97 × 36,322.70
  4. Step 4: Simplify right side
    66,543.55x = 3,335,366,519.78
  5. Step 5: Solve for x
    x = 3,335,366,519.78/66,543.55
  6. Step 6: Final answer
    x = 50,123.06

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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.