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Finding the Fourth Proportional to 256,876.40, 354,500.28 and 158,781.44

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Solution

The fourth proportional to 256,876.40, 354,500.28 and 158,781.44 is: 219,125.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,876.40 : 354,500.28 = 158,781.44 : x
  2. Step 2: Convert to fraction form
    256,876.40/354,500.28 = 158,781.44/x
  3. Step 3: Cross multiply
    256,876.40x = 354,500.28 × 158,781.44
  4. Step 4: Simplify right side
    256,876.40x = 56,288,064,938.80
  5. Step 5: Solve for x
    x = 56,288,064,938.80/256,876.40
  6. Step 6: Final answer
    x = 219,125.09

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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.