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Finding the Fourth Proportional to 66,326.17, 91,503.03 and 40,824.85

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Solution

The fourth proportional to 66,326.17, 91,503.03 and 40,824.85 is: 56,321.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,326.17 : 91,503.03 = 40,824.85 : x
  2. Step 2: Convert to fraction form
    66,326.17/91,503.03 = 40,824.85/x
  3. Step 3: Cross multiply
    66,326.17x = 91,503.03 × 40,824.85
  4. Step 4: Simplify right side
    66,326.17x = 3,735,597,474.30
  5. Step 5: Solve for x
    x = 3,735,597,474.30/66,326.17
  6. Step 6: Final answer
    x = 56,321.62

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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.