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Finding the Fourth Proportional to 66,453.75, 91,706.18 and 36,645.75

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Solution

The fourth proportional to 66,453.75, 91,706.18 and 36,645.75 is: 50,571.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,453.75 : 91,706.18 = 36,645.75 : x
  2. Step 2: Convert to fraction form
    66,453.75/91,706.18 = 36,645.75/x
  3. Step 3: Cross multiply
    66,453.75x = 91,706.18 × 36,645.75
  4. Step 4: Simplify right side
    66,453.75x = 3,360,641,562.51
  5. Step 5: Solve for x
    x = 3,360,641,562.51/66,453.75
  6. Step 6: Final answer
    x = 50,571.14

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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.