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Finding the Fourth Proportional to 256,856.80, 385,876.32 and 182,161.60

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Solution

The fourth proportional to 256,856.80, 385,876.32 and 182,161.60 is: 273,661.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,856.80 : 385,876.32 = 182,161.60 : x
  2. Step 2: Convert to fraction form
    256,856.80/385,876.32 = 182,161.60/x
  3. Step 3: Cross multiply
    256,856.80x = 385,876.32 × 182,161.60
  4. Step 4: Simplify right side
    256,856.80x = 70,291,847,853.31
  5. Step 5: Solve for x
    x = 70,291,847,853.31/256,856.80
  6. Step 6: Final answer
    x = 273,661.62

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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.