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Finding the Fourth Proportional to 65,190.87, 89,967.87 and 36,896.55

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Solution

The fourth proportional to 65,190.87, 89,967.87 and 36,896.55 is: 50,919.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,190.87 : 89,967.87 = 36,896.55 : x
  2. Step 2: Convert to fraction form
    65,190.87/89,967.87 = 36,896.55/x
  3. Step 3: Cross multiply
    65,190.87x = 89,967.87 × 36,896.55
  4. Step 4: Simplify right side
    65,190.87x = 3,319,504,013.85
  5. Step 5: Solve for x
    x = 3,319,504,013.85/65,190.87
  6. Step 6: Final answer
    x = 50,919.77

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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.