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Finding the Fourth Proportional to 276,431.81, 381,593.60 and 185,840.32

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Solution

The fourth proportional to 276,431.81, 381,593.60 and 185,840.32 is: 256,538.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,431.81 : 381,593.60 = 185,840.32 : x
  2. Step 2: Convert to fraction form
    276,431.81/381,593.60 = 185,840.32/x
  3. Step 3: Cross multiply
    276,431.81x = 381,593.60 × 185,840.32
  4. Step 4: Simplify right side
    276,431.81x = 70,915,473,896.78
  5. Step 5: Solve for x
    x = 70,915,473,896.78/276,431.81
  6. Step 6: Final answer
    x = 256,538.77

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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.