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Finding the Fourth Proportional to 279,345.44, 385,947.72 and 194,839.76

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Solution

The fourth proportional to 279,345.44, 385,947.72 and 194,839.76 is: 269,193.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,345.44 : 385,947.72 = 194,839.76 : x
  2. Step 2: Convert to fraction form
    279,345.44/385,947.72 = 194,839.76/x
  3. Step 3: Cross multiply
    279,345.44x = 385,947.72 × 194,839.76
  4. Step 4: Simplify right side
    279,345.44x = 75,197,961,137.35
  5. Step 5: Solve for x
    x = 75,197,961,137.35/279,345.44
  6. Step 6: Final answer
    x = 269,193.44

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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.