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Finding the Fourth Proportional to 66,133.30, 91,264.61 and 35,919.21

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Solution

The fourth proportional to 66,133.30, 91,264.61 and 35,919.21 is: 49,568.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,133.30 : 91,264.61 = 35,919.21 : x
  2. Step 2: Convert to fraction form
    66,133.30/91,264.61 = 35,919.21/x
  3. Step 3: Cross multiply
    66,133.30x = 91,264.61 × 35,919.21
  4. Step 4: Simplify right side
    66,133.30x = 3,278,152,692.16
  5. Step 5: Solve for x
    x = 3,278,152,692.16/66,133.30
  6. Step 6: Final answer
    x = 49,568.87

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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.