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Finding the Fourth Proportional to 279,257.76, 385,383.60 and 151,941.60

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Solution

The fourth proportional to 279,257.76, 385,383.60 and 151,941.60 is: 209,683.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,257.76 : 385,383.60 = 151,941.60 : x
  2. Step 2: Convert to fraction form
    279,257.76/385,383.60 = 151,941.60/x
  3. Step 3: Cross multiply
    279,257.76x = 385,383.60 × 151,941.60
  4. Step 4: Simplify right side
    279,257.76x = 58,555,800,797.76
  5. Step 5: Solve for x
    x = 58,555,800,797.76/279,257.76
  6. Step 6: Final answer
    x = 209,683.70

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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.