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Finding the Fourth Proportional to 171,236.54, 256,856.54 and 76,471.55

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Solution

The fourth proportional to 171,236.54, 256,856.54 and 76,471.55 is: 114,708.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,236.54 : 256,856.54 = 76,471.55 : x
  2. Step 2: Convert to fraction form
    171,236.54/256,856.54 = 76,471.55/x
  3. Step 3: Cross multiply
    171,236.54x = 256,856.54 × 76,471.55
  4. Step 4: Simplify right side
    171,236.54x = 19,642,217,741.44
  5. Step 5: Solve for x
    x = 19,642,217,741.44/171,236.54
  6. Step 6: Final answer
    x = 114,708.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.