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Finding the Fourth Proportional to 101,183.52, 139,635.28 and 55,861.32

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Solution

The fourth proportional to 101,183.52, 139,635.28 and 55,861.32 is: 77,089.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,183.52 : 139,635.28 = 55,861.32 : x
  2. Step 2: Convert to fraction form
    101,183.52/139,635.28 = 55,861.32/x
  3. Step 3: Cross multiply
    101,183.52x = 139,635.28 × 55,861.32
  4. Step 4: Simplify right side
    101,183.52x = 7,800,211,059.37
  5. Step 5: Solve for x
    x = 7,800,211,059.37/101,183.52
  6. Step 6: Final answer
    x = 77,089.74

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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.