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Finding the Fourth Proportional to 66,716.75, 92,072 and 36,908.75

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Solution

The fourth proportional to 66,716.75, 92,072 and 36,908.75 is: 50,935.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,716.75 : 92,072 = 36,908.75 : x
  2. Step 2: Convert to fraction form
    66,716.75/92,072 = 36,908.75/x
  3. Step 3: Cross multiply
    66,716.75x = 92,072 × 36,908.75
  4. Step 4: Simplify right side
    66,716.75x = 3,398,262,430
  5. Step 5: Solve for x
    x = 3,398,262,430/66,716.75
  6. Step 6: Final answer
    x = 50,935.67

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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.