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Finding the Fourth Proportional to 256,874.20, 385,196.10 and 116,560.60

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Solution

The fourth proportional to 256,874.20, 385,196.10 and 116,560.60 is: 174,788.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,874.20 : 385,196.10 = 116,560.60 : x
  2. Step 2: Convert to fraction form
    256,874.20/385,196.10 = 116,560.60/x
  3. Step 3: Cross multiply
    256,874.20x = 385,196.10 × 116,560.60
  4. Step 4: Simplify right side
    256,874.20x = 44,898,688,533.66
  5. Step 5: Solve for x
    x = 44,898,688,533.66/256,874.20
  6. Step 6: Final answer
    x = 174,788.63

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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.